Merge pull request #4 from davelassanske/master

Large file bug fix & file type contraint enhancement
adding HEAD method to CORS, so the upload automatic retry works
Merge pull request #5 from tuler/doc-HEAD

Updated doc about CORS suggestion, adding HEAD method.
fixed debugging statements
updated documentation
Merge branch 'master' of github.com:cinely/mule-uploader
Fixed list indexes
commented/simplified the js code
fixed various uploader bugs
Add a sample Sinatra backend
Add note about Sinatra backend not persisting uploads in a database
Remove logging
Merge @JAndritsch 's pull request, modifying for convenience
removed unnecessary file
Update README.md
changed badger link
increased max file size to 50GB
fixed chunk corruption bug
improved the uploader by allowing parallel uploads; also fixed bug where progress was >100%
updated text