Add several cucumber feature files

Also
* clean up some code
* add robotium library
* add eclipse settings, project, and classpath files
Add feature and step definitions for SetBrightnessBrick
Update libraries

* cucumber-android
* cucumber-core
* cucumber-java
* cucumber-picocontainer
* gherkin
Add feature and step definitions for PlaceAtBrick

Also a little refactoring
Refactor Util
Add feature for PrintBrick and CheckUserVariable