diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1b7fe4b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,29 @@
+# Xcode
+#
+build/
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata
+*.xccheckout
+*.moved-aside
+DerivedData
+*.hmap
+*.ipa
+*.xcuserstate
+
+# CocoaPods
+#
+# We recommend against adding the Pods directory to your .gitignore. However
+# you should judge for yourself, the pros and cons are mentioned at:
+# http://guides.cocoapods.org/using/using-cocoapods.html#should-i-ignore-the-pods-directory-in-source-control
+#
+# Pods/
+
+.svn/
+.DS_Store
diff --git a/LHMaterialDesign.xcodeproj/project.xcworkspace/xcuserdata/lihao-xy.xcuserdatad/UserInterfaceState.xcuserstate b/LHMaterialDesign.xcodeproj/project.xcworkspace/xcuserdata/lihao-xy.xcuserdatad/UserInterfaceState.xcuserstate
deleted file mode 100644
index db91a3a..0000000
Binary files a/LHMaterialDesign.xcodeproj/project.xcworkspace/xcuserdata/lihao-xy.xcuserdatad/UserInterfaceState.xcuserstate and /dev/null differ
diff --git a/LHMaterialDesign.xcodeproj/xcuserdata/lihao-xy.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist b/LHMaterialDesign.xcodeproj/xcuserdata/lihao-xy.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
deleted file mode 100644
index fe2b454..0000000
--- a/LHMaterialDesign.xcodeproj/xcuserdata/lihao-xy.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
+++ /dev/null
@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Bucket
-   type = "1"
-   version = "2.0">
-</Bucket>
diff --git a/LHMaterialDesign.xcodeproj/xcuserdata/lihao-xy.xcuserdatad/xcschemes/LHMaterialDesign.xcscheme b/LHMaterialDesign.xcodeproj/xcuserdata/lihao-xy.xcuserdatad/xcschemes/LHMaterialDesign.xcscheme
deleted file mode 100644
index f026c71..0000000
--- a/LHMaterialDesign.xcodeproj/xcuserdata/lihao-xy.xcuserdatad/xcschemes/LHMaterialDesign.xcscheme
+++ /dev/null
@@ -1,112 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Scheme
-   LastUpgradeVersion = "0620"
-   version = "1.3">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
-      <BuildActionEntries>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "CDB564F21AC57095007910BA"
-               BuildableName = "LHMaterialDesign.app"
-               BlueprintName = "LHMaterialDesign"
-               ReferencedContainer = "container:LHMaterialDesign.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "NO"
-            buildForArchiving = "NO"
-            buildForAnalyzing = "YES">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "CDB5650B1AC57095007910BA"
-               BuildableName = "LHMaterialDesignTests.xctest"
-               BlueprintName = "LHMaterialDesignTests"
-               ReferencedContainer = "container:LHMaterialDesign.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      buildConfiguration = "Debug">
-      <Testables>
-         <TestableReference
-            skipped = "NO">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "CDB5650B1AC57095007910BA"
-               BuildableName = "LHMaterialDesignTests.xctest"
-               BlueprintName = "LHMaterialDesignTests"
-               ReferencedContainer = "container:LHMaterialDesign.xcodeproj">
-            </BuildableReference>
-         </TestableReference>
-      </Testables>
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "CDB564F21AC57095007910BA"
-            BuildableName = "LHMaterialDesign.app"
-            BlueprintName = "LHMaterialDesign"
-            ReferencedContainer = "container:LHMaterialDesign.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-   </TestAction>
-   <LaunchAction
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Debug"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      allowLocationSimulation = "YES">
-      <BuildableProductRunnable
-         runnableDebuggingMode = "0">
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "CDB564F21AC57095007910BA"
-            BuildableName = "LHMaterialDesign.app"
-            BlueprintName = "LHMaterialDesign"
-            ReferencedContainer = "container:LHMaterialDesign.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </LaunchAction>
-   <ProfileAction
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      buildConfiguration = "Release"
-      debugDocumentVersioning = "YES">
-      <BuildableProductRunnable
-         runnableDebuggingMode = "0">
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "CDB564F21AC57095007910BA"
-            BuildableName = "LHMaterialDesign.app"
-            BlueprintName = "LHMaterialDesign"
-            ReferencedContainer = "container:LHMaterialDesign.xcodeproj">
-         </BuildableReference>
-      </BuildableProductRunnable>
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Debug">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
-</Scheme>
diff --git a/LHMaterialDesign.xcodeproj/xcuserdata/lihao-xy.xcuserdatad/xcschemes/xcschememanagement.plist b/LHMaterialDesign.xcodeproj/xcuserdata/lihao-xy.xcuserdatad/xcschemes/xcschememanagement.plist
deleted file mode 100644
index ce863a6..0000000
--- a/LHMaterialDesign.xcodeproj/xcuserdata/lihao-xy.xcuserdatad/xcschemes/xcschememanagement.plist
+++ /dev/null
@@ -1,27 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>SchemeUserState</key>
-	<dict>
-		<key>LHMaterialDesign.xcscheme</key>
-		<dict>
-			<key>orderHint</key>
-			<integer>0</integer>
-		</dict>
-	</dict>
-	<key>SuppressBuildableAutocreation</key>
-	<dict>
-		<key>CDB564F21AC57095007910BA</key>
-		<dict>
-			<key>primary</key>
-			<true/>
-		</dict>
-		<key>CDB5650B1AC57095007910BA</key>
-		<dict>
-			<key>primary</key>
-			<true/>
-		</dict>
-	</dict>
-</dict>
-</plist>