add user model
Merge pull request #1 from switzersc/shelby

add user model
add users controller
Merge pull request #2 from switzersc/shelby

add users controller
added index file
added a date helper to the application helper
Merge pull request #3 from switzersc/dan

added a date helper to the application helper
Merge pull request #4 from switzersc/anna

added index file
Merge branch 'master' into ghezzi

This is necessary.