Update Readme

README.md

@@ -5,7 +5,7 @@ A framework for building Mobile cross-platform UI.
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 ## Important Notice
-* The convenience distribution below is only for users' users' **convenience**. Weex Release is always in the form of [source code](https://weex.apache.org/download/download.html).
+* The convenience distribution below is only for users' **convenience**. Weex Release is always in the form of [source code](https://weex.apache.org/download/download.html).
 * From Weex `0.28` or higher, the JavaScript interpreter is not bundled with Weex anymore. Developers could choose whatever JavaScript interpreter they like in their app as long as it implements the [cpp headers](https://svn.webkit.org/repository/webkit/releases/WebKitGTK/webkit-2.9.92/Source/JavaScriptCore/API/).
   * **Optional** JavaScript interpreter choice: If you have no idea about how to choose proper JavaScript interpreter, you could add `apply from: 'https://raw.githubusercontent.com/apache/incubator-weex/release/0.28/android/sdk/buildSrc/download_jsc.gradle'` in your build.gradle, everything else should work as expected. See [weex-playground](https://github.com/apache/incubator-weex-playground/blob/master/android/playground/build.gradle#L7) to see a demo.