Update Swift学习：从Objective-C到Swift.md

conmuted->computed

Swift学习：从Objective-C到Swift/Swift学习：从Objective-C到Swift.md

@@ -98,7 +98,7 @@ class Shape {
 - `Stored Properties`和`Computed properties`
 
 在Swift中,property被分为两类：`Stored Properties`和`Computed properties`
-简单来说,就是stored properties 能够保存值,而conmuted properties只提供getter与setter,利用stored properties来生成自己的值。个人感觉Computed properties更像方法,而不是传统意义的属性。但是这样一个特性存在,使得我们更容易组织我们的代码。
+简单来说,就是stored properties 能够保存值,而computed properties只提供getter与setter,利用stored properties来生成自己的值。个人感觉Computed properties更像方法,而不是传统意义的属性。但是这样一个特性存在,使得我们更容易组织我们的代码。
 
 延伸阅读：[computed property vs function](http://stackoverflow.com/questions/24035276/computed-read-only-property-vs-function-in-swift)
 
@@ -799,4 +799,4 @@ if let thisSementTitle = dataSource?.titleFroSegmentAtIndex?(index){
 1. [《The Swift Programming Language》](https://developer.apple.com/library/ios/documentation/Swift/Conceptual/Swift_Programming_Language)
 2. [Apple Swift Blog](https://developer.apple.com/swift/blog/)
 3.  [Using Swift with Cocoa and Objective-C](https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/BuildingCocoaApps/)
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