Added additional args to Dartium launch

This makes launching Dartium from Sublime act much more like when Dartium is launched from the Eclipse editor. Side effects include getting rid of a bunch of potentially annoying startup and "first run" dialogs.
Merge pull request #290 from my-personal-forks/master

Use analysis server snapshot from SDK
Prepare release
Fix return value for find_pubspec_path
Add TODO
Merge pull request #299 from my-personal-forks/fix-298-wrong-return-value

Fix #298 wrong return value
Fixes #300 - Add command palette item to stop running script
Merge pull request #301 from my-personal-forks/fix-300-stop-running-script

Fixes #300 - Add command palette item to stop running script
Remove command to open DartEditor
Merge pull request #302 from my-personal-forks/fix-294-remove-open-darteditor

Remove command to open DartEditor
Merge pull request #286 from toji/patch-1

Added additional args to Dartium launch
Add TODO