Merge pull request #76 from leeight/master

Ignore .svn directory
add csslint
Markdown compatible
csslint cli help
fix bug: error output when css file is empty
modified csslint config.
update csslint rules
add css importer processor
modify default project build conf
bump 0.4.7
jshint: ES5 option is now set per default
jshint: es3 => true
add author
csslint: add `--no-color` option.
update csslint cli doc.
auto create build conf file when project init
revise doc
revise option name
fix #79
fix #80