Remove note about Sidekiq

We're using SuckerPunch which doesn't require any special setup (other
than writing threadsafe code).
Add .csv orders download

I didn't do any especial work to style it or anything, so feel free to
tweak. I just mostly wanted to get the functionality up for demos.
Remove unused order attributes
Make fulfilled orders accessible; filter client-side
Remove specs for unused functionality
Update gems in Gemfile.lock file
update gems in Gemfile.lock file
moved over to angular for sign in/out
started storing current user data on client-side instead of rendering through rails
add ngResource
fixed up sessions/profile with devise
registration converted to angular
splitting up angular templates
split out help partial and add angular route
Updated gems in Gemfile.lock file
Moved Kevin Sun up to PC section; Added a log file to .gitignore file
Added .travis.trigger file to trigger travis
Added .rvmrc to .gitignore file; removed .travis.trigger file
Removed .rvmrc from .gitignore; Added rake to Gemfile
Restored cucumber tests as opt-in only; rake still is only rspec