check enviroment vars for configs
Merge pull request #47 from 23min/config

check enviroment vars for config values
simplify
Merge branch 'master' of github.com:5HT/n2o
missed mochinum module used in wf:convert()
Merge branch 'master' of git://github.com/5HT/n2o
Update n2o_mochinum.erl
read htmleditor module from config
Update README.md