Add .travis.yml
Add testcase Datasource/MongodbSource
Change test database name
Improve testcase for Travis CI
Merge remote-tracking branch 'radig/cake2.2' into cake2.2

Conflicts:
	Test/Case/Datasource/MongodbSourceTest.php
Update .travis.yml
Update .travis.yml, README.markdown

Add env PECLMONGO
Add Travis CI Status
Fix translations of associative conditions (OR, AND...)