added a default :compile rake task; added html_escape method to lib/default.rb
added a default :compile rake task; added html_escape method to lib/default.rb

--HG--
extra : convert_revision : svn%3A177060d3-6165-4ab0-95eb-642399a075a8/trunk%4033

nanoc/nanoc,barraq/nanoc,remko/nanoc,hilohiro/nanoc,RubenVerborgh/nanoc,gjtorikian/nanoc,legallybrown/nanoc