amend the way to load config file

In my environment, vim-jsbeautyfy-simple cannot load config file(~/.jsbeautifyrc).
So I fixed the way to load config file, it works fine :)


My environment is Mac OS X 10.9.3, node v0.10.29, MacVim v7.4.

---------------error message---------------------

/Users/MY_NAME/.jsbeautifyrc:2
    "indent_size": 2,
                 ^
SyntaxError: Unexpected token :

---------------error message---------------------