using download and unpack function in install scripts
modified install scripts to use download/unpack, opencv test added
fixed unpack, added pyside test
pep8
using download and unpack for pyside post install
upgraded pip
upgraded setuptools
wheel setup and skip pyside test on travis
fixed cleanup after build
logging cached packages
libsdl for pygame
fixed opencv test
fix review comments
Merge pull request #9 from braincorp/find_links

Find links