website deployment instructions
minor change
changed hostname to natlang-web from cs-champ
added one missing step
added URL alias instructions
Updated d3 library files.

Minor modifications to map.js for topojson API changes.
Fix for year zero issue.
Merge branch 'master' into fixyearzero

Conflict on website.md resolved in favour of master.
Merge pull request #65 from theq629/fixyearzero

Fix for year zero bug and update to d3 libraries