[TORQUE-727] Document how to create a new Rails application with an alternate version of Rails.
[TORQUE-727] Document how to create a new Rails application with an alternate version of Rails.

ksw2599/torquebox,mje113/torquebox,vaskoz/torquebox,torquebox/torquebox,vaskoz/torquebox,ksw2599/torquebox,torquebox/torquebox-release,torquebox/torquebox-release,torquebox/torquebox,ksw2599/torquebox,mje113/torquebox,torquebox/torquebox-release,samwgoldman/torquebox,samwgoldman/torquebox,torquebox/torquebox-release,samwgoldman/torquebox,mje113/torquebox,mje113/torquebox,torquebox/torquebox,vaskoz/torquebox,vaskoz/torquebox,ksw2599/torquebox,torquebox/torquebox,samwgoldman/torquebox