fixes delete folder on XP
- added implementation for ShowSaveDialog on Linux
fix whitespace
Merge pull request #314 from adobe/irichter/showSaveDialogLinux

- added implementation for ShowSaveDialog on Linux
Merge pull request #313 from adobe/jeff/fix-delete-folder-win-xp-rb

Fixes delete folder on XP
Implements the following brackets Shell APIs on Linux:

* brackets.fs.copyFile
* brackets.app.getUserDocumentsDirectory
Merge pull request #315 from adobe/jeff/linux-fs-api-impl

Implement missing APIs on Linux
cleaned up and added chromium support
grunt set-sprint --sprint=31
Merge pull request #317 from macie/linux-OpenLiveBrowser

Support for chromium browser in linux
update cef
use g_spawn_command_line_async instead of execlp
Merge pull request #318 from adobe/jeff/cef_3.1547.1419

update cef
remove hardcoded linux32 cef download
Merge pull request #320 from adobe/jasonsanjose/fix-cef-linux32

remove hardcoded linux32 cef download
code review from @ingorichter. rewrite ReadFile to use glib.
Added task name and args to result output. Failing grunt on failed mac build step.
added return for failing task
Merge pull request #325 from jsoverson/fail-build-steps

Failing with useful message on mac build step
Merge pull request #319 from adobe/jasonsanjose/CloseLiveBrowser

use g_spawn_command_line_async instead of execlp