Merge pull request #2 from vjovanov/topic/travis

Adding travis to README and removing warnings from the project.
Merge pull request #3 from vjovanov/cross-compilation

Persistance of method ASTs.
wip
not so wip
Review by @vjovanov
- Compile method collects ast
- TargsClassExample annotated
- new <Class> lifting ongoing
- Tests: nested sample added, class pending