Fixed --sdk help for platform add

Author: ikoevska

docs/man_pages/project/configuration/platform-add.md

@@ -3,8 +3,8 @@ platform add
 
 Usage | Synopsis
 ------|-------
-Android latest runtime | `$ tns platform add android [--frameworkPath <File Path>] [--symlink] [--sdk <target sdk>]`
-Android selected runtime | `$ tns platform add android[@<Version>] [--frameworkPath <File Path>] [--symlink] [--sdk <target sdk>]`
+Android latest runtime | `$ tns platform add android [--frameworkPath <File Path>] [--symlink] [--sdk <API Level>]`
+Android selected runtime | `$ tns platform add android[@<Version>] [--frameworkPath <File Path>] [--symlink] [--sdk <API Level>]`
 <% if (isMacOS) { %>iOS latest runtime | `$ tns platform add ios [--frameworkPath <File Path>] [--symlink]`
 iOS selected runtime | `$ tns platform add ios[@<Version>] [--frameworkPath <File Path>] [--symlink]`<% } %>
 
@@ -13,15 +13,16 @@ Configures the current project to target the selected platform. <% if(isHtml) {
 ### Options
 * `--frameworkPath` - Sets the path to a NativeScript runtime for the specified platform that you want to use instead of the default runtime. If `--symlink` is specified, `<File Path>` must point to directory in which the runtime is already extracted. If `--symlink` is not specified, `<File Path>` must point to a valid npm package. 
 * `--symlink` - Creates a symlink to a NativeScript runtime for the specified platform that you want to use instead of the default runtime. If `--frameworkPath` is specified, creates a symlink to the specified directory. If `--frameworkPath` is not specified, creates a symlink to platform runtime installed with your current version of NativeScript.
-* `--sdk` - Sets the Android target SDK. The value should be a valid Android API Level, for example 17, 19, MNC.
+* `--sdk` - Sets the target Android SDK for the project.
 
 ### Attributes
+* `<API Level>` is a valid Android API level. For example: 17, 19, MNC.<% if(isHtml) { %> For a complete list of the Android API levels and their corresponding Android versions, click [here](http://developer.android.com/guide/topics/manifest/uses-sdk-element.html#platform).<% } %>
 * `<File Path>` is the complete path to a valid npm package or a directory that contains a NativeScript runtime for the selected platform.
 * `<Version>` is any available version of the respective platform runtime published in npm. <% if(isHtml) { %>If `@<Version>` is not specified, the NativeScript CLI installs the latest stable runtime for the selected platform.  
 To list all available versions for Android, run `$ npm view tns-android versions`  
-To list only experimental versions for android, run `$ npm view tns-android dist-tags`  
+To list only experimental versions for Android, run `$ npm view tns-android dist-tags`  
 To list all available versions for iOS, run `$ npm view tns-ios versions`  
-To list only experimental versions for ios, run `$ npm view tns-ios dist-tags` 
+To list only experimental versions for iOS, run `$ npm view tns-ios dist-tags`  
 
 ### Command Limitations