Clean README and point travis image at chapel-lang repo.
Use -W when building docs (make warnings errors).

Fix a couple of warnings that sphinx was complaining about.
Move pych --testing call to test_python.bash script.

It should work now, since the test_python.bash script correctly configures the environment.
Use portable open command in top level makefile.
Install pyChapel from repo, instead of pypi for travis testing.
Merge pull request #1 from thomasvandoren/fix-build-breakages

Fix build breakages and a couple other cleanup items.
Make the Chapel library copy command in util/test_python.bash more general

By using the environment variable $VIRTUAL_ENV instead of a hard-coded path, we
can more easily utilize the same script for our nightly testing and the Travis
build.
Merge pull request #2 from chapel-lang/generallyVirtual

Make the Chapel library copy command in util/test_python.bash more general

By using the environment variable $VIRTUAL_ENV instead of a hard-coded path, we
can more easily utilize the same script for our nightly testing and the Travis
build.
Merge pull request #1 from chapel-lang/master

Grab changes from chapel-lang/pychapel.