Update RoboSpice version in samples
UI sample now uses the new Bitmap Request class and API has been refactored.
Javadoc of Tweet POJO class.
ignore libraries-directory for Eclipse/Ant build
update lib version
Merge pull request #2 from ajans/eclipse-build

ignore libs-directory for Eclipse/Ant build
checkstyle + Android lint cleanup, moving some styles into styles.xml
Merge mainline samples master branch into weefbellington fork master branch