Experimental Dropbox branch v2.5.x

Dropbox v2.5.37 included here
Add TextMate 2.x alpha series

v2.0-alpha.9495 included in this commit
Merge pull request #27 from rolandwalker/dropbox-2.5.x

Experimental Dropbox branch v2.5.x
Merge pull request #28 from rolandwalker/textmate-2.x

Add TextMate 2.x alpha series