Fixed onNavigationItemSelected was triggered 2 times when using setupWithViewPager

Author: ittianyu

README.md

@@ -123,17 +123,13 @@ allprojects {
 	repositories {
 		...
 		maven { url "https://jitpack.io" }
+		maven { url "https://maven.google.com" }
 	}
 }
 ```
 
 Step 2. Add the dependency
 ```groovy
-compile 'com.github.ittianyu:BottomNavigationViewEx:1.2.1'
-```
-
-If you can access google maven https://maven.google.com. And SDK >= 26. You can try the new version.
-```groovy
 compile 'com.github.ittianyu:BottomNavigationViewEx:1.2.4'
 compile "com.android.support:design:26.+"
 ```

README_ZH.md

@@ -121,17 +121,13 @@ allprojects {
 	repositories {
 		...
 		maven { url "https://jitpack.io" }
+		maven { url "https://maven.google.com" }
 	}
 }
 ```
 
 步骤 2. 添加依赖
 ```groovy
-compile 'com.github.ittianyu:BottomNavigationViewEx:1.2.1'
-```
-
-如果你可以访问谷歌 maven 仓库 https://maven.google.com，且 SDK >= 26，可以使用新版本
-```groovy
 compile 'com.github.ittianyu:BottomNavigationViewEx:1.2.4'
 compile "com.android.support:design:26.+"
 ```