Gruntfile: use strict & force Unix newlines
Merge pull request #286 from twbs/gruntfile-tweak

Gruntfile: use strict & force Unix newlines
use /*! for attribution banner so it survives minification
fix capitalization of JavaScript
JS & CSS are the default for <script> & <style>
Merge pull request #287 from twbs/slash-star-bang

use /*! for attribution banner so it survives minification
Merge pull request #288 from twbs/use-defaults

JS & CSS are the default for <script> & <style>
Add cssmin & uglify grunt tasks.