Fix 2.0.0-snapshot
- Add quality tools.
- Add some javadocs.
Add more specific error message.
Add test framework
Add new way of building the cache
Correct checkstyle for module app
Correct some checkstyle
Update check style config
Fix quality (still remaining PMD)
Fix first test (remove roboelectric for android test framework)

Merge commit 'a1e7033af2480e52683bee534c9555a5bbad83e9' into dev

Conflicts:
	lib/src/main/java/com/vincentbrison/openlibraries/android/dualcache/lib/DualCacheBuilder.java
correct build tools
Fix quality
Add dummy objects for testing.
Add first test.
Fix quality
Add cutom serialization to ram layer
More tests
- Fix crash.
- Add tests.
- Fix.
- Add tests.
Add more tests.
All basic tests have been implemented (up to 33 tests).
Preparing for release, still need to complete readme.md
Working on read me