Switched source from torproject to tbb-bin

https://github.com/glamrock/tbb-bin is new source
Update README.md
Add Polish translation
Merge pull request #59 from Quintasan/master

Add Polish translation
Added a stub for a script to turn the repo into a full mirror

This script will be run on each server, and will only work on Linux/BSD for now. It will change the links into references to local files, presumably pulled from the Tor Project's download page or tbb-bin.
Switched sources back to torproject.org

tbb-bin should only be necessary as a fallback for setup.sh
Updated version numbers to 3.6.1