Updated mvn commands in Android Readmes.
Merge branch 'master' of github.com:cucumber/cucumber-jvm

# By Aslak Hellesøy (2) and Björn Rasmusson (1)
# Via Aslak Hellesøy
* 'master' of github.com:cucumber/cucumber-jvm:
  Attribution. Closes #581, #584
  Remove duplication in Reflections implementations.
  Make a separate travis job for android
Test dependency injection in android-test project.
Added info on how to start Android emulator.