added flash-hash error msg when user attempts to add non-existent user as collaborator
readme updates
Merge branch 'master' of github.com:teabait/batman into t
style.css conflicts resolved, spacing inconsistencies/quirks made to conform to the rest of the document
github links in welcome#index about div for each of our team members, and our github repo link pulses. sweeeeet\!
removed some unneccesary code that was commented out in js assets; clarified some comments about recorder; obfuscated the api keys by setting them to env vars that are passed to the javascript files as global vars on window.
removed unused dependencies related to S3 -- carrierwave direct, fog
added activerecord validation for track attribute 'removed'
restyled beatcove logo button on welcome to not have red outline