added route for recommendations
Merge branch 'master' into pairings

Conflicts:
	app/routes/match.js
added mailer module
working function to build pairs -- no logic
counting matches played
working count of matches per player
finding minimum ratio of matches seems to be working
rating range function working
incorporating ratings diff
Merge branch 'master' into pairings
refactored some functions to new file
Merge pull request #26 from ewilson/pairings

READY (sortof) - Recommended Pairings