Update recipes/pip.rb

/usr/bin/ is not pip_binary location when doing a source install on rhel.
COOK-1925: Support SmartOS for python
Merge pull request #24 from wohali/master

COOK-1925: Support SmartOS for Python
Merge pull request #23 from tdcarrol/master

[COOK-1866] /usr/bin/ is not pip_binary location when doing a source install on rhel.
release v1.2.0
[COOK-2297] more gracefully handle pip packages from VCS or source archives
Merge pull request #28 from Frick/master

[COOK-2297] more gracefully handle pip packages from VCS and source archives
also look for https
release v1.2.2
Remove the installation of pip via python-distribute.org.