.travis.yml: make pip install line a little more clean.
Merge pull request #643 from Mkaysi/travis

.travis.yml: make the pip install line a little more clean
requirements.txt: add SocksiPy-branch.

ERROR 2014-05-18T18:06:21 Cannot use socks proxy (SocksiPy not installed), using direct connection instead.
Merge pull request #645 from Mkaysi/requirements.txt

requirements.txt: add SocksiPy-branch