Add testCompile to build.gradle

[baruchiro]

To which build.gradle file we need to add the testCompile line, and what to write instead of 'x.x.x'?

[pandasys]

testImplementation 'com.nhaarman:expect.kt:1.0.1'

Would be nice if the readme specified the lastest. You can search the [maven respository][https://mvnrepository.com/artifact/com.nhaarman/expect.kt]

It put the dependency in the app or library build.gradle.