cannot stringify function with object literal shorthand syntax

[fengzilong]

Repro

var stringify = require( 'javascript-stringify' )

stringify( {
  hello() {}
} )

Current Result

{
  hello: hello() {}
}

it's not a valid JS syntax as missing the function prefix

Expected Result

{
  hello: function hello() {}
}

Related code

javascript-stringify/javascript-stringify.js

Line 205 in 9d2b937

'[object Function]': String,

[fengzilong]

Oh, sorry, I think this PR may solve this, I just saw it

#16

[blakeembrey]

Closed with #19.