v0.2.1

Pre-release

Known Issues

• #2 Crash on El Capitan. Any stack traces would be greatly appreciated.
  UPDATE: Root cause found, will be fixed in next release
• #4 Auto-updater not implemented yet

Enhancements

• Show File open dialog box when docker-machine command is not found
• Update Electron to 0.34.1
• Various fixes for app crashes