I upgraded the Eclipse ADT Plugin, and did an Export on a project, to use Gradle,
then Imported it to the latest Android Studio 0.3.2., selecting the 'build.gradle'
like they want you to.
I downloaded the very latest Gradle 1.9, but I was getting errors
that said basically "Need Gradle 1.6, found 1.9".
I got the build to the point where it complained about the "dependencies"
classpath in the build.gradle:
Gradle 1.9 is not officially supported yet. See https://groups.google.com/d/msg/adt-dev/Xntuvifurjg/i6O0B4nyRwcJ
In the meantime gradle 1.8 should work.
Also the latest build tools are 0.6.+