feat(Gruntfile): new HTML smoosher task

BREAKING CHANGE: `smoosher` task will inline all `.css` and .js` files to reduce HTTP requests and increase load performance. It's ideal for small website with some basic styles just like this project.
wip: remove inlined assets for prod. environment
test: temporary disable `csslint` to bypass lint check

This can be fixed for a newer version of parser-lib release, more info: https://github.com/nzakas/parser-lib/pull/105
Merge pull request #4 from sparanoid/feat/inline-assets

feat(Gruntfile): new HTML smoosher task