Use env vars for all deployment variables.

[ci skip]
Use URL and Path for resolving git location.

[ci skip]
Lint Grunt tasks.

[ci skip]
Add build command instructions to README.

[ci skip]
Adjust `engines` field in `package.json`.

[ci skip]
Whitespace.

[ci skip]
Fix issue with path.join.

[ci skip]
Restructure stylesheets.

[ci skip]
Merge branch 'master' into feature/code-canvas

* master:
  Restructure stylesheets.
  Fix issue with path.join.
  Whitespace.
  Adjust `engines` field in `package.json`.
  Add build command instructions to README.
  Lint Grunt tasks.
  Use URL and Path for resolving git location.
  Use env vars for all deployment variables.

Conflicts:
	site/assets/css/docs.less