updating readme with link to the WIKI

Author: Bill Dinger

README

@@ -1,6 +1,7 @@
 As of Nov 1st 2016, active development on "Windows for OpenSSH" is being done in https://github.com/PowerShell/openssh-portable. 
 
-This repo (https://github.com/PowerShell/Win32-OpenSSH) is being maintained to keep track of releases and issues.
+This repo (https://github.com/PowerShell/Win32-OpenSSH) is being maintained to keep track of releases and issues. The 
+[Documentation](https://github.com/PowerShell/Win32-OpenSSH/wiki) for the project is also maintained here in the wiki. 
 
 Release History:
 7/26/2018 -- Release 7.7.2.0 with source https://github.com/PowerShell/openssh-portable/releases/tag/v7.7.2.0