XML : Emojicon Library in Android Studio

I implemented the library in Android Studio in my dependencies:

  dependencies {   compile 'com.rockerhieu.emojicon:library:1.0'  }    

I also added xmlns:tools="http://schemas.android.com/tools" in the Android Manifest.xml file and tools:replace="android:icon" in the tag also in the Android_Manifest.xml file.

When I build the project this errors comes out:

Error:(8) No resource identifier found for attribute 'emojiconAlignment' in package 'com.example.projectemojitest'

Why? Please help :)