trigger event when files are added for upload
add option to only manage a single file upload
Fix IE9 bug where data[1].value (aka 'key') is not set properly
Change optional config values from empty string to nil

Empty strings are truthy, causing default values from being set.
Fix IE <= 9 bug where settings.path is appended twice.

https://github.com/waynehoover/s3_direct_upload/issues/82#issuecomment-17904169

We remove `settings.path` from line 117 and not on line 107 because the form that gets submitted needs to send `settings.path`.
Merge pull request #81 from heeton/master

Trigger 'file_added' event
Merge pull request #87 from Hengjie/master

Fix IE9 issue with timestamp/unique_id
Merge pull request #89 from dbryand/master

Update config in Readme replacing "" with nil.
version bump to 0.1.4
update readme for file_added event
Fix for spaces in urls
added support for single file progress bar without js template
fix code notation
fix space after class
Merge pull request #95 from danielmurphy/filepath_fix

Fix for spaces in urls
Merge pull request #96 from sufleR/master

Add option to not use script template for single file progress bar.
Add back current_files.push (fix s3_uploads_complete callback)
revert spaces change, is actually working with filenames with spaces
remove file_added callback as we already have before_add that does the same thing
version 0.1.5