Travis uses too old pip, need to upgrade that first
Travis uses too old pip, need to upgrade that first

We need --pre option to pip to install the prerelease version. This
was introduced in pip 1.4.1. As Travis currently uses pip 1.3.1,
we need to update it first.

smcoll/stormpath-django,smcoll/stormpath-django,stormpath/stormpath-django,patpatpatpatpat/stormpath-django,stormpath/stormpath-django,patpatpatpatpat/stormpath-django