Add VeriSign VIP Access.

Many prominent sites, including PayPal and name.com, support two factor
authentication using VeriSign's VIP Access system.

https://idprotect.vip.symantec.com/learnmore.v
Shorten them to em
Merge branch 'master' into gh-pages
Merge branch 'master' into gh-pages
Merge branch 'master' into gh-pages
Updated any images larger than 24x24 to that size since that is what is displayed on the site anyway. Any images not in png were converted to match as well.
Merge branch 'master' of https://github.com/jdavis/twofactorauth into resized_icons
Merge branch 'master' into gh-pages
Merge branch 'master' into gh-pages
Simple pledges support for 2FA
Removed duplicate meta tag in default.html
Merge pull request #130 from theMagicalKarp/rm-extra-meta-tag

Removed duplicate meta tag in default.html
Merge pull request #129 from tadfisher/master

Simple indicates future support for 2FA
Delete linkedin.png

Didn't work in IE.
Add LinkedIn image thanks to @AdamTReineke
Added easyDNS (https://easydns.com) to the 'domains' category and the easyDNS logo to img/domains
easyDNS logo (16x16)
Add US Bank, closes #131
Merge branch 'master' into gh-pages
Update README with icon guidelines as per #103