Support auditing files on localhost

[addyosmani]

$ a11y http://localhost:3000/

undefined:1
TypeError: 'undefined' is not a function (evaluating 'document.querySelector.b
^
SyntaxError: Unexpected token T
    at Object.parse (native)
    at /Users/addyo/projects/a11y/index.js:23:23
    at ChildProcess.exithandler (child_process.js:635:7)
    at ChildProcess.EventEmitter.emit (events.js:98:17)
    at maybeClose (child_process.js:743:16)
    at Socket.<anonymous> (child_process.js:956:11)
    at Socket.EventEmitter.emit (events.js:95:17)
    at Pipe.close (net.js:465:12)

Similarly, this fails:

$ a11y http://192.168.1.105:3000

undefined:1
TypeError: 'undefined' is not a function (evaluating 'document.querySelector.b
^
SyntaxError: Unexpected token T
    at Object.parse (native)
    at /Users/addyo/projects/a11y/index.js:23:23
    at ChildProcess.exithandler (child_process.js:635:7)
    at ChildProcess.EventEmitter.emit (events.js:98:17)
    at maybeClose (child_process.js:743:16)
    at Socket.<anonymous> (child_process.js:956:11)
    at Socket.EventEmitter.emit (events.js:95:17)
    at Pipe.close (net.js:465:12)

[addyosmani]

Confirmed that this is supported by the accessibility tools as well as phantom, so it must be something silly I'm doing.

[addyosmani]

Thank youuu.