Gulp

#### Primary Gulp Tasks:

* Remove unused CSS selectors
* Combine CSS files
* Minify CSS file
* Combine JS files
* Minify JS file
* Optimize images

You execute all tasks by running ```gulp``` or ```gulp default```, which creates a new folder named ```dist``` where you can find all final files.

I couldn't detect any significant performance increase since the video accounts for almost 95% of entire page size.