Add two methods:
	* Class method to return all users with moments scheduled today
	* instance method that returns true if user has no methods today
Add check to moments controller that builds new moments when user selects time
and if user does not have any moments in current day
Update create times for moments to only build moments that occur
after the current time
Set up beginning of concern, need to complete
Merge pull request #18 from jwrobes/create_moments_when_time_entered

Create moments when time entered