(TWILL-100) Fix examples POMs and update documentations
- Updates to examples
- Updates to BundleJarExample application and documentation.

Signed-off-by: Terence Yim <chtyim@apache.org>
Temporarily disable Travis-CI hadoop-2.3 profile as it always fail due to hostname issue. Looks like it is a known issue (https://github.com/travis-ci/travis-ci/issues/2970)
Merge remote-tracking branch 'upstream/master'