Zip code is working

But it is working on every field
Removed forward slashes
Made the regex for month.
Include April.
Merge pull request #1 from ebarr/Birth-Month-Regex

Regex for month -- only March is allowed
Updated javascript
Merge branch 'Zip-Code-Regex'
Merge branch 'master' into Credit-Card-Regex

Conflicts:
	app/assets/javascripts/application.js