fix snip cask, which does not have an app to link

looks like snip uses a pkg to install directly to /Applications, so
`link` neither works nor makes sense here

also add a proper `uninstall` line for it

refs #1249
fix audacity link line

audacity ships in a nested directory

refs #1249
Added new cask for Tunnel Bear app.

Tunnel bear is a VPN service with an incredible simple UI. More information here: https://www.tunnelbear.com/about/
Merge pull request #1253 from bilby91/tunnel-bear

Added new cask for Tunnel Bear app.
Merge remote-tracking branch 'upstream/master'
Rename TunnelBear Cask
PhpStorm 7.0
Merge remote-tracking branch 'upstream/master'