Update main.yml

Added service under Bitcoin
Adding rackspace
Merge pull request #89 from mpdavis/rackspace

Adding Rackspace's lack of 2FA support
Adding bips.png
Merge pull request #78 from BitcoinInternetPaymentSystem/patch-1

Update main.yml
Updating Charles Schwab 2FA link
Merge pull request #1 from jdavis/master

Meging Upstream
Merge branch 'master' of https://github.com/mxxcon/twofactorauth into Chase