Added input for user to change moment message
Added input and ajax setting of message body
  * added message to users model
  * added form for setting message
  * added display of current message for user on show page
  * created ajax call and javascript for inserting html
  * created new route in Users controller for message
Added styling to text box for custom message.
	* updated moment builder to user custom message with time and date stamp
Merge pull request #40 from jwrobes/update_moment_message_feature

Added input for user to change moment message