Added a constructor
Added a constructor

-changed calendar to Calendar(), which now acts as a constructor
-removed jQuery dependence
-removed jQuery functionality
-removed custom DOM element
-added previous and next month buttons
-added how to use and license in source for those who receive this
library from an outside source
-cleaned up code
-added more descriptive comments
-added the name of the month and year to the top of the calendar

aer-studio/aer-calendar