Add support for building with Travis

- Add build script (.travis.yml) for travis-ci.org support.
- Updates android/build.gradle to make linter errors non-fatal.
- Adds script to launch and wait for emulator image.
Change 2014 to 2013 in Italian translation

This is still the 2013 version, so let's not get too far ahead of
ourselves!
Merge pull request #5 from tjohns/travis

Add support for building with Travis
Merge pull request #3 from tjohns/master

Change 2014 to 2013 in Italian translation