updated demo url
Add grunt and needed plugins for minifying

Adresses #219
Add Gruntfile to configure minifying

Adresses #219
Add minified file and sourcemap to bower package

Adresses #219
Add info about installation of dev dependencies to README

Adresses #219
Add minified version and sourcemap to version control

Closes #219
ignore node_modules
bumping version to 2.1.0
minified 2.1.0
Merge pull request #235 from mischah/feature/minified-version

Add minified version via Grunt/UglifyJS
Merge pull request #236 from mathiasbynens/pr/235

minified 2.1.0
Merge pull request #237 from mathiasbynens/master

bringing up to date