Added nougat

Author: yuvaraj119

app/build.gradle

@@ -1,13 +1,13 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 23
+    compileSdkVersion 24
     buildToolsVersion "24.0.1"
 
     defaultConfig {
         applicationId "com.yuvaraj.jigsawpuzzle"
         minSdkVersion 15
-        targetSdkVersion 23
+        targetSdkVersion 24
         versionCode 1
         versionName "1.0"
     }
@@ -22,5 +22,5 @@ android {
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:23.4.0'
+    compile 'com.android.support:appcompat-v7:24.2.1'
 }