Appcelerator Titanium code for uploading image to Cloudinary + fetching transparency version. rawImage is the TiBlob Object.

TiCloudinary

// Register for an Account ☞ http://cloudinary.com/invites/lpov9zyyucivvxsnalc5/n8b98rtyuredob4geg2z

// replace these
var cloudinaryCloudName = 'Your_Cloud_Name';
var cloudinaryAPIKey    = 999999999999;
var cloudinaryAPISecret = 'XXXXXXXXXX-XXXXX-XX';

// call this function & pass in TiBlob Object
function cloudImageClean(rawImage) {
    var nowUnix = moment().unix();  // requires momentjs
    var signature = Ti.Utils.sha1('timestamp=' + nowUnix + cloudinaryAPISecret);
    
    var url = 'http://api.cloudinary.com/v1_1/' + cloudinaryCloudName + '/image/upload';
    var client = Ti.Network.createHTTPClient({
        onload : function(e) {
            Ti.API.info("Received Obj: " + this.responseText);
            var response = JSON.parse(this.responseText);
            var transparentImg= 'http://res.cloudinary.com/' + cloudinaryCloudName + '/image/upload/c_scale,e_make_transparent:30,r_40,w_447/' + response.public_id + '.png'; 
            // Tadaaa! Do what you wish with the transparentImg
        },
        onerror : function(e) {
            Ti.API.info(JSON.stringify(e));
        },
        timeout:4000  // in ms
    });
    client.setRequestHeader("enctype", "multipart/form-data");
    client.setRequestHeader("Content-Type", "image/png");
    client.open("POST", url);
    
    var params = {
        api_key:cloudinaryAPIKey,
        file: rawImage,
        //public_id: someUniqueName, // if added, make sure the signature sha1 starts with:'public_id=' + someUniqueName + '&timestamp=...'
        signature:signature,
        timestamp:nowUnix,
    };
    client.send(params);

};

Very helpful, thanks!

In the interest of making it a little more objective, adding another method, and reusing in several of my own Titanium projects (and hopefully for others), I forked your Gist and then pushed my changes to the following repo if you are interested: https://github.com/kjschulz/TiCloudinary. I made sure to attribute your work and link back here. Thanks again!