Con models made

Made con model
Made a couple of cons
Made a way of viewing all cons, and viewing any one con.

Add more con data.
Make views nicer:
  Possibly add way of getting directions to venue using google maps api
Turn genre from string into enum:
  That is, instead of arbitrary string for genre, genre should be one
of “Anime, Comics, Sci-Fi, Horror, Gaming, Steampunk, Franchise
Specific”
Make start and end dates local time.
Way of only seeing past cons or future cons.
Allow photos to be added to past cons
Form for adding con.
Way of searching cons.