Remove Android manifest plugin.

It is not provided enough value to justify maintaining in its current state.

Closes #95.
Merge pull request #204 from square/jw/a-swift-clean-death

Remove Android manifest plugin.
Update coffee example URL
Merge pull request #208 from Nilhcem/master

Update coffee example URL
Forbid Provider and Lazy as provides return type.
Merge pull request #212 from square/jw/you-shall-not-pass

Forbid Provider and Lazy as provides return type.
Unused @Provide methods cause compiler failures unless @Module(library=true)
Merge pull request #205 from square/kiran/LEVEL-UP

Unused @Provide methods cause compiler failures unless @Module(library=t...
Merge from upstream/master