Added Crazydomains to domains and Cloudshards to developers

(Probably should create a new Hosting section for VPSs and whatnot?)
Update developer.yml

accidently removed heroku.....
Merge pull request #1 from jdavis/master
Customer.io doesn't support 2FA
Added aTech Media

See #454 and #448
Merge #246 into new correct sections, closes #246

Conflicts:
	_data/developer.yml
Added aTech Media logo
Changed doc
Add Persowna image
Clean up whitespace in identity.yml
homepage is not https
Added Envato Twitter

The red "X"s scared me on the page so I added their Twitter to replace them with a nice button.
Move running locally section to CONTRIB.md

- Also trim lines to 80 characters. Some were getting pretty
  ridiculously long.
Merge pull request #570 from jamcat22/patch-1

Added aTech Media
Add iPage to Hosting
Add methods to Aha!
Replaced wrong size logos and recompressed everything to save ~250kb
Merge pull request #575 from mxxcon/ImageOptim

Logo optimizations
Merge pull request #572 from jamcat22/patch-2

Added Envato Twitter
Added comment on Godaddy.com restrictions