[Debugger] Debugger won't start due to spaces in directory path

[rickyc]

Similar issue to #214. When I attempt to do command + D in the simulator, I get the following issue.

Launching Dev Tools...
Failed to run launchChromeDevTools.applescript { [Error: Command failed: /bin/sh -c /Users/ricky/Dropbox (Personal)/Sites/AwesomeProject/node_modules/react-native/packager/launchChromeDevTools.applescript http://localhost:8081/debugger-ui
/bin/sh: -c: line 0: syntax error near unexpected token `Personal'
/bin/sh: -c: line 0: `/Users/ricky/Dropbox (Personal)/Sites/AwesomeProject/node_modules/react-native/packager/launchChromeDevTools.applescript http://localhost:8081/debugger-ui'
]
  killed: false,
  code: 2,
  signal: null,
  cmd: '/bin/sh -c /Users/ricky/Dropbox (Personal)/Sites/AwesomeProject/node_modules/react-native/packager/launchChromeDevTools.applescript http://localhost:8081/debugger-ui' }

/bin/sh: -c: line 0: syntax error near unexpected token `Personal'
/bin/sh: -c: line 0: `/Users/ricky/Dropbox (Personal)/Sites/AwesomeProject/node_modules/react-native/packager/launchChromeDevTools.applescript http://localhost:8081/debugger-ui'

[11:47:30 AM] <START> request:/index.ios.bundle
[11:47:30 AM] <END>   request:/index.ios.bundle(11ms)