Modified Houdini's "new" tool to work more cleanly in Pipeline

Also, cleaned up a few small bugs in README.md and project_env.sh, and added default toolbars shelves and otl templates. Lastly, added .gitignore file to make sure we aren't bloating the repo with .swp and .pyc files.
Merge branch 'master' of https://github.com/byu-animation/byu-animation-tools into eestrada-master

Conflicts:
	.gitignore
Merge pull request #7 from eestrada/master

Updated Houdini "new" button to work with the Owned pipeline