update readme contributors section - pull request requirements
add to features lis
remove old parameter from validate doc
#474 - ensure correct failing callback name is reported when an error is caught during invocation of a user-supplied callback
add blog link to readme
Ability to define hover and focus classes for UploadButton
Merge pull request #485 from obiwanus/3.1-IP

Ability to define hover and focus classes for UploadButton
cleanup of test js
#498 - xform function arguments too
#380 - add support for uploading folders via DnD (Chrome 21+ only)
document dropzone instance functions
#380 - add upload directories to list of features in readme
#380 - adjustment to code that determines when all dropped files in all directories have been parsed
#380 - dnd cleanup
#380 - delegate log calls to FUB so their visiblity is appropriately controlled
declare charset to be UTF-8 on testing pages
#380 - workaround for chrome issue #149735, fix for dropped empty directory
#380 - cleanup
#380 - cleanup
mods to testing code