The library is available through JitPack.
In order to use it you have to add following lines to your project's build.gradle
allprojects {
repositories {
...
maven { url "https://jitpack.io" }
}
}
And following lines to app build.gradle
compile 'com.github.appunite.KotlinExtensions:ext-android:master-SNAPSHOT'
compile 'com.github.appunite.KotlinExtensions:ext-java:master-SNAPSHOT'
More info here https://jitpack.io/