Lesson 2, Exercise 1 has some dependency issues

[engtomhat]

The following implementation throws an error saying that it can't be resolved com.android.support.constraint:constraint-layout

Replacing version 1.0.0-beta4 with 1.0.2 solved the error.

I checked mvnrepository to see the available versions.

It's not a big issue as we end up removing the dependency as part of the project. However, the initial Gradle build fails due to the version not found.

[mwanagenzi]

@engtomhat thanks.The changes in the version worked.