Add Clef as a 2FA provider
Added AOL

AOL had 2FA before everyone else, but they removed it a few years ago. :( http://securitywatch.pcmag.com/security-software/284240-aol-dropping-2-factor-authentication-support
Added Education
Added Oplerno
Added Coursera
Added Udemy
Added Udacity
added images
changed images to 32x32 images
Added AOL logo and changed name to AOL Mail

Changed the name because it is in the mail category and AOL does way
more than just mail.
updated images
removed document link
corrected url
logos for Udacity and Coursera
Merge branch 'master' of https://github.com/mxxcon/twofactorauth into mxxcon-master
merge
Merge branch 'mxxcon-master'
added images
Merge branch 'mxxcon-education'
Added exception to Square Enix

Also corrected a capitalization error.
Merge pull request #607 from webhat/master

Added Education Added Oplerno Added Coursera Added Udemy Added Udacity
Merge pull request #612 from jamcat22/patch-2

Added exception to Square Enix
Merge pull request #606 from jamcat22/patch-1

Added AOL
Reorder @webhat's PR, add Twitters, add edu icon

This finishes #607