README refactor

* Add links to FAQ, plugin guide, and wiki
* Add steps to get started
* Clarified language
* Broke links out
* Changed double quotes to single quotes for consistency
* Fix capitalization
* Normalize coding style
* Fix incorrect indentation
* Document options in correct style
* Add multiple tasks to initial task example
* Example
  * Remove ./ from paths
  * Remove CoffeeScript so exclude globs make more sense
  * Remove templates
  * Replace public/ with build/ to avoid confusion with client/
  * Use gulp-uglify as gulp-minify doesn't exist