Add new day link to homepage
Add some tweaks to d3 geometer lib
Bump lib version
Add new day
Merge branch 'gh-pages' of https://github.com/christabor/etude into gh-pages

* 'gh-pages' of https://github.com/christabor/etude:
  Add new day
  Bump lib version
  Add some tweaks to d3 geometer lib
  Add new day link to homepage