Merge pull request #1 from dottorblaster/master

Added Threadless and ThinkGeek
Merge pull request #2 from dottorblaster/master

added Redbubble, Society6, and The Yetee as @kikachan suggested
Update README.md

added Society6
added EMP
Merge pull request #3 from g0dz1ll4/master

Update README.md
Removed dupe
Added more tees site
Update README.md
Merge pull request #4 from ChrisZeta/master

Added more tees site
Merge pull request #2 from elder-cb/master

Merging changes