add first name and last name to users
add validation for first name and last name for user
add first name and last name to user factory
add first name and last name to sign up
add first name and last name to seed
devise params sanitizer
change email to displayfirst name and first letter of last name on top nav
Get first name and last name from facebook login
add test for first name and last name of user model
add first name and last name to edit user form
sanitizer so test work for user update
uncomment code so google maps api works
Test for display_name method