Updating procfile for heroku
Fixing typo
adding postinstall for heroku
make most devDependencies dependencies
Switch to our own fork of loopback-sdk-angular

Nacho please run:

$ rm -rf node_modules/grunt-loopback-angular-sdk
$ npm install

Otherwise earth will burn
Finally! authenticated downloads for the user

Now not only we let the user authenticate we also let him/her download it's
own files, so no one can mess with private data!
Provide a working download link
No need to depend on loopback-sdk-angular, grunt-loopback... does it for us