New site: bitly.com
update twitter handle
32x image
Merge pull request #484 from ilyakatz/bitly

Add Bitly to Social
Remove Projects section, move sites to comm.

- Mailgun probably belongs better in Communication.
- Mailchimp is similar to Mailgun.
Remove pygments from _config
Merge branch 'master' of github.com:jdavis/twofactorauth
Fully remove projects.yml