link to documatation added to usage/help text

Pmodules/modbuild.in

@@ -153,6 +153,10 @@ MISCELLANEOUS OPTIONS:
         Install in this overlay. Defaults to '${PMODULES_HOME%%/Tools*}'.
 --legacy
         Use legacy configuration files.
+
+DOCUMENTATION:
+	Full documentation is available at 
+	http://pmodules.gitpages.psi.ch
 "
 	exit 1
 }

Pmodules/modulecmd.bash.in

@@ -2694,6 +2694,10 @@ SUBCOMMANDS:
         + initswitch            modulefile1 modulefile2
         + initlist
         + initclear
+
+DOCUMENTATION:
+	Full documentation is available at 
+	http://pmodules.gitpages.psi.ch
 '
 
 subcommand_help() {