- update documentation
- update documentation

Signed-off-by: José Valim <0c2436ea76ed86e37cc05f66dea18d48ef390882@gmail.com>

repinel/activeresource,om-nishu-trantor/activeresource,maclover7/activeresource,delameko/activeresource,SweeD/activeresource,peterjm/activeresource,rails/activeresource,rjordan/activeresource,Shopify/activeresource,1776/activeresource,eileencodes/activeresource,chadzilla2080/activeresource,wyattisimo/activeresource,yui-knk/activeresource