Cleaned up. Only derby sample application.

TODO:
* Create sample application for mysql and h2
* Create samples which shows different usages of gemini.ext.di
* remove all other  code from derby.rcp
* Create feature based build of products
* Create update site which contains all product builds
Cleanup part 2
OPEN - task 3: Remove DIEActivator 
http://github.com/muuki88/org.eclipse.gemini.ext.di/issues/issue/3
Add target folder to gitignore
Completly revamped tutorial application.

* Reimplemented handlers
* Made more samples
* Removed mysql (derby only)
* Complete build
Added more examples and doc
Updated target platform
Updated product to latest gemini.ext.di
Fixed minor bug in PersonDAO
Updated dependencies using

- Gemini JPA Milestone
- Kepler Updatesite
- EclipseLink 2.5.x
Added neccessary handler addon: HandlerProcessingAddon

see
http://www.vogella.com/articles/EclipseRCP/article.html#runconfiguration_problems
Fixed SaveMultiDBHandler
Updated gemini.ext.di to the kepler version
Add travis ci config file
Add build status to README.md
Adding correct start levels and icons
Added epl v1 license
#8 Implemented preferences dialog to set database settings. Error
reproduced
CLOSE #8 Using property makes things work
Updated reinit handling