request a ride page loads properly
can request a ride for an event
adds event_id to rider creations in riders.js
adds a players needing ride scope and test for rider
event show page has a list of riders who need rides
driver can confirm a rider who requested a ride on his carpool
you can give a ride to a player needing a ride
adds some comments to riders controller and tests the method I added to the rider schema
user cannot add riders or request rides for carpools if the carpool is full
adds test controller action for riders to fix duplicate rider issue
driver can not add a player who already has a ride
can remove users from a carpool
fixes merge conflict
updated readme
Merge pull request #64 from AEgan/egan-dev

I'm currently getting problems creating a rider, I think it is because if the save fails then res.sends both a 'back' and a 'carpools/...'  Will merge this, but I think its best to protect against overlapping res.sends by if/elsing every time