Add Brackets logo

Fixes editorconfig/editorconfig#163
Add new Code::Blocks logo
Add new Notepad++ logo
Add new SublimeText logo
Add new TextMate logo
Add new Visual Studio logo
Merge pull request #17 from editorconfig/add-brackets-logo

Add Brackets logo
Merge pull request #18 from editorconfig/update-logos

Update drawings for some of the logos
Update Emacs logo