Encourage use of the installer for users.

Author: Tod Beardsley

README.md

@@ -24,10 +24,11 @@ The mailing list archives are available from:
 
 Installing
 --
-Generally, you should use the installer which contains all dependencies
-and will get you up and running with a few clicks. See the [Dev
-Environment Setup][wiki-devenv] if you'd like to deal with dependencies
-on your own.
+
+Generally, you should use [the free installer](https://www.metasploit.com/download)
+which contains all dependencies and will get you up and running with a
+few clicks. See the [Dev Environment Setup](http://r-7.co/MSF-DEV) if
+you'd like to deal with dependencies on your own.
 
 Using Metasploit
 --