You should definitely capitalize on the time of year and get your name out right around New Years resolution time (as in, now). Maybe put together a short write-up on a few similar apps in the space (including yours) and shoot it over to TC, Mashable, etc. and see if they'll do a New Years resolution app post. I was going to suggest cutting the price in half if you had priced it anything over $1, but perhaps you could offer it for free over the next few days just to increase adoption and capture the New Years resolution crowd. I can see this app going in several different directions (leaderboards for popular commits, holding friends accountable for commits, etc) and really like the concept! Kudos and good luck!