Added documentation of PHP variables, functions, and configuration; moved embedding documentation to separate page
Made links not headings
Moved markdown into docs folder, updated README links, started scssVariables page
Added scss variable documentation
changed order of sections on siteConfiguration
Added link from embedding to site configuration
Updated siteConfiguration examples
Added colon to example
Changed sass command to look less like a file example
Updated page configuration processing flow description
Changed formatting of function examples
Updated wording for $HEAD, $FOOT, $NAVIGATION when set to true
Fixed anchor links the do not use camel casing
implemented "includeFile()", minor coding standard whitespace
Remove search "this/all" options, site by default (if configured)
Updated defaults to be set before including site configuration, mainly to support $HEAD = true page configuration with additional site configuration.  Removed meta keywords and description variables, can be configured into $HEAD in site/page configuration.
Removed keywords and description from php variables documentation
Added includeFile documentation to phpFunctions.md
Corrected documentation of where $HEAD markup is inserted
Added links from navItem(), navGroup() to $NAVIGATION