Merge branch 'master' into develop
Added LICENSE file.
Renamed Thread to Task.
Added return value to Cancelable.cancel().
Added javadoc according to new cancel return value.
Allow to pass plain Runnables (and not only Requests) to Communicator.
java.lang.Thread to Thread.
closed to isClosed().
Made Wrapper implement the Runnable interface.
Removed unused imports.
Made TAG private.
Prepared readme section for Communicator.
First draft of Communicator section.
Set project version to 0.6.2.
Merge branch 'release-0.6.2'