SDK properly polls now but fails when trying to call success or fail blocks from within the polling method
Finalized version of polling - Can set number of tries, delay between tries, and if it should even poll. Overrides the setCompletionBlock to do the polling
Pull polling into own class
Added combo call for upload and poll and better example with comments
Update README.md
Merge pull request #3 from joshdholtz/Gregadeaux-master

The polling stuff was done by Gregadeaux - he's awesome