Send all version controlled packages to pip
Send all version controlled packages to pip

Detect package listings containing a '+' and assume they are all
version control support for pip which conda can't handle. These
are 'git+', 'hg+', 'bzr+' or 'svn+', as documented on the webpage.
https://pip.pypa.io/en/stable/reference/pip_install/#vcs-support

We also need to handle listings containing 'git://', which is also
supported.

scottclowe/python-continuous-integration,scottclowe/python-ci,scottclowe/python-ci,scottclowe/python-continuous-integration