Allowed crossdomain for Parse.file upload with POST

[skavinvarnan]

Fix for #118

Allowed crossdomain for the route
POST /files/:filename

This works when uploading a file with Base64 and byte. How ever it doesn't work when uploading with Content-Type image/png

Works
var base64 = "V29ya2luZyBhdCBQYXJzZSBpcyBncmVhdCE=";
var file = new Parse.File("myfile.txt", { base64: base64 });
file.save();

Works
var bytes = [ 0xBE, 0xEF, 0xCA, 0xFE ];
var file = new Parse.File("myfile.txt", bytes);
file.save();

Doesn't work
var file = new Parse.File("myfile.zzz", fileData, "image/png");
file.save();

Reason
When uploading an image with the Content-Type image options request is made
OPTIONS /files/:filename

Note: I haven't used the middlewares.allowCrossDomain method. Please review my code before merge

[gfosco]

The best method is to just pass middlewares.allowCrossDomain here in the route.

router.post('/files/:filename',
                  middlewares.allowCrossDomain,
                  bodyParser.raw({type: '*/*', limit: '20mb'}),
                  middlewares.handleParseHeaders,
                  processCreate);

[gfosco]

I made this fix in master. Thanks! 👍

[skavinvarnan]

@gfosco Thanks. Sorry i was not aware of the syntax.