Add hack reactor banner
Add screenshots
Edit about page
Change homepage content
Fix spelling and remove buttons
Merge branch 'master' of github.com:hr-twenty/twenty-site into li-signin

* 'master' of github.com:hr-twenty/twenty-site:
  Fix spelling and remove buttons
  Change homepage content
  Edit about page
  Add screenshots
  Add hack reactor banner

Conflicts:
	index.html