Fixing tests that were not revisited when callbacks were moved
to run in their own threads. Also removing print statements.
Merge pull request #220 from continuuity/feature/fix-sometimes-failing-test

Fixing tests that were not revisited when callbacks were moved
Add target directories to git's ignore
Update README.md
Update README.md
Update README.md
Update README.md
add a macro for cluster owner.
Adding doc and changelog for owner macro.
Merge pull request #222 from continuuity/feature/owner-macro

Feature/owner macro
Merge remote-tracking branch 'origin/develop' into feature/sync-cluster-to-current-template

Conflicts:
	CHANGELOG.md