added alembic create all
database creation
updated readme
added db creation
added basic db model
added basetest class
added simple db test
added sql tests to travis
added more fields to models
fixed mysql creation bug
changed permissions
updated requirements
added identity migration file
cd into correct directory
Merge pull request #13 from Cal-CS-61A-Staff/migrations

LGTM. I'm working on making testing better, but this is good for now.