feat(*): gulp integrated Pattern Lab

-- added documentation
-- added watch-, minify-, deploy-, release-, copy-task etc.
-- assets-folder for scss, images, fonts etc.
-- hide node_modules, .sass_cache etc. in .gitignore
-- added editorconfig
-- bower.json for dependencies
-- package.json contains node-dependencies
Merge pull request #1 from neoskop/gulp-integration

feat(*): gulp integrated Pattern Lab