Create pypy3-2.4.0

Support for the new Pypy3 release http://morepypy.blogspot.com
sub-env pip-install
Update pypy3-2.4.0
Merge pull request #185 from pngdwnld/sub_env_pip

Allowing pip-install to have access to config vars
python-2.7.9
default python: 2.7.9
Merge pull request #180 from cclauss/patch-6

Create pypy3-2.4.0
pypy3!
change to pypy3
pypy3
remove vendor directory for cedar-14
Merge branch 'master-Heroku-Buildpack-Python' into develop-SWIGstep

* master-Heroku-Buildpack-Python:
  remove vendor directory for cedar-14
  pypy3
  change to pypy3
  pypy3!
  default python: 2.7.9
  python-2.7.9
  Update pypy3-2.4.0
  sub-env pip-install
  Create pypy3-2.4.0