Point download links at Maven Central.
Merge pull request #199 from square/jwilson/downloadlinks

Point download links at Maven Central.
Revert missed integration test to old dagger-compiler inclusion strategy.

Closes #200.
Merge pull request #201 from square/jw/fix-it-test

Revert missed integration test to old dagger-compiler inclusion strategy.
Merge remote-tracking branch 'origin/master'