optimize images
add uglify
add apple-touch-icon
Merge pull request #103 from marcobiedermann/feature/apple-touch-icon

add apple-touch-icon
Merge pull request #102 from marcobiedermann/feature/uglify

add uglify
Merge pull request #101 from marcobiedermann/feature/imageoptim

optimize images
Merge branch 'master' into feature/cssmin

Conflicts:
	Gruntfile.js
	_layouts/default.html
	package.json