Fix 'opam list' command on the home page

typo spotted by Matej Kosik
Merge pull request #84 from samoht/master

Fix 'opam list' command on the home page
Fixed 'home' link on about page
Add news about 1.1.1
Merge pull request #86 from AltGr/announce-1.1.1

Adds a newsline about 1.1.1