Merge tag 'v3.5.2'

Fixed IE10s InvalidStateError bug.
Merge tag 'v3.5.3'

Added folder upload.
Merge tag 'v3.6.0'

Introduced autoProcessQueue as well as uploadMultiple.
Merge tag 'v3.6.1'

Bugfix for getRejectedFiles() and additional tests.
Update readme.md
parallelUploads is respected now when uploadMultiple is set to true.

Fixes #247
Added the download files and fixed the tests for travis.
Merge remote-tracking branch 'upstream/develop' into develop