created models/migrations for appointment, condition, cost, medication, pet, veterinarian
updated to rails 4.2.0.rc2, fixed gemfile, ran migrations
updated models with associations
modified migrations files to reflect associations
added basic routes and an index method in the pets controlller
updated migrations to change datatypes; updated seed file; got nested routes working
added model and migration for supplies
Merge pull request #1 from ShaynaCummings/model_creation

added all models