Updated ez_setup URL

Changed the URL to download ez_setup according to the the new URL (see
https://bitbucket.org/pypa/setuptools/issue/192/any-attempt-to-download-ez_setuppy-fails
for details)
Updated get_pip URL

Changed get_pip url to match the one in pip documentation
(https://pip.pypa.io/en/latest/installing.html#install-or-upgrade-pip)
Merge pull request #97 from vaz-ar/master

Updated ez_setup URL