version_string is a new service parameter

version_string is a new service parameter.

Documentation updated and current release is now 0.6.0

server/MaxScale_template.cnf

@@ -37,6 +37,8 @@ passwd=maxpwd
 # 	user=<User to fetch password inforamtion with>
 # 	passwd=<Password of the user, plain text currently>
 #	enable_root_user=<0 or 1, default is 0>
+#	version_string=<specific string for server handshake,
+#		default is the MariaDB embedded library version>
 #
 # Valid router modules currently are:
 # 	readwritesplit, readconnroute and debugcli