Update dependencies and test framework

[ivacf]

• Update project dependencies to latest version
• Move to robolectric 3.0 and official unit test support
• Rewrite demo app functional tests in Espresso and remove Robotium.

[hitherejoe]

This looks good. Whats happening with the tests?

[ivacf]

Something is wrong with travis and it seems to be killing the process. The test passed the first time so it' safe to merge.

[hitherejoe]

If you say so!