Merge pull request #6 from Firef0x/gfwlistplus

Remove ||youtu.be as it's duplicated.
Add instagram.com
Revert "Add instagram.com" as it's duplicated.
See https://code.google.com/p/autoproxy-gfwlist/issues/detail?id=161

This reverts commit 3477fb3f39ae85f9ce513f9d501044d103be27d8.