if the user types '1 space' then we turn that into '01/'
consolidate formatForwardSlash and formatSpace into formatForwardSlashAndSpace
I'm not sure how that Classcd came into my code this fixes that.
space between parens and function name, im having a poor day at it.
rename slash to char in formatForwardSlashAndSpace()
Merge pull request #116 from khanh/expiry-treat-space-like-slash

if the user types '1 space' then we turn that into '01/' ... idea from #74
Merge pull request #1 from stripe/master

pull in latest from master