Update urls.md

Corrected the --uglyUrls flag, wouldn't work if lowercase.
switching website to gohugo.io & adding links to discuss
Adding a community link to the homepage
Extend template's basic math functions to accept float, uint and string values
adding memstat option to server
instructions for Homebrew installation

updated installation page of documentation, and changed "Download" button on index.html to scroll to bottom where multiple installation options are featured

getting the scrolldown to work required removing the fixed positioning on #action and on the footer
Making the install on the homepage a bit more clear
Make highlight.js example clearer

Provide the missing step to actually use the library. Should be helpful for a newbie.
Make taxonomy documentation match the example.