(TWILL-95) Example version number fix and zookeeper test timeout
- Update version number in the examples
  - This fixes `mvn package` on a machine that hasn't had twill installed
    on it.
- bump up another zookeeper timeout

Signed-off-by: Terence Yim <chtyim@apache.org>
Increase test timeout and alter Travis setting to show test output
Added more hadoop version to the travis test.
Incrase test timeout to avoid test failure on slow machine, sometimes on Travis
Restructure examples POM
- inherit from the twill-parent.
- Fix checkstyle problems in example.
Not doing deploy at end.
Fix NOTICE copyright statement
Merge remote-tracking branch 'upstream/master'