Merge pull request #1 from mbelling/master

Added osgi detection and output to file to KarafFeaturesGenTask
add outputFile
Added a feature to add extra bundles to the features file. These bundles will be placed at the end of the list.
Fixed a tab/spaces problem
Updated README.md to add extraBundles example
Merge pull request #2 from jensenn/extrabundles

Extra Bundles Feature
upgrade gradle to 1.12