add plumber to control errors with notify fix issue #25 fix issue #29
move gulp configuration to gulp folder
extract config to separate file
remove __dirname from config
move rev to plugins
rename index.coffee to gulpfile.coffee
refactoring postcss filters
extract rev func
improve revision
implement gulp revision fix issue #19 fix issue #23 fix issue #20
replace module  rimraf to del
remove unused deps
optimize package.json
gulp coffeelinter #24
Merge pull request #30 from RomanovRoman/gulp

gulp coffeelinter #24
update deps
move rev to not server mode
fix config
mute unused in srv mode
fix issue #24 add notify about coffeescript linter warnings and errors