adding 'erb' and 'erubis' filters (which will replace the 'eruby' filter at some point)
adding 'erb' and 'erubis' filters (which will replace the 'eruby' filter at some point)

--HG--
extra : convert_revision : svn%3A177060d3-6165-4ab0-95eb-642399a075a8/nanoc/trunk%40434

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