Changed install instructions

README.md

@@ -1,14 +1,20 @@
 Unofficial gentoo-twister-overlay
-================================
+=================================
 
 A gentoo overlay for twister.
 This overlay fetches the source from github, builds the twisterd and copies it to /usr/bin.
 
-You can add the overlay to portage with:
+First install layman if you don't have allready:
+	# emerge -a layman
+	# echo "source /var/lib/layman/make.conf" >> /etc/portage/make.conf
 
-	# layman -o https://raw.github.com/ddorian1/gentoo-twister-overlay/master/gentoo-twister-overlay.xml -a twister
+	(See http://wiki.gentoo.org/wiki/Layman for further instructions.)
 
-And than install twister (and dependencies) with:
+Then you can add the overlay to portage with:
+	
+	# layman -o https://raw.github.com/ddorian1/gentoo-twister-overlay/master/gentoo-twister-overlay.xml -f -a twister
+
+And install twister (and dependencies) with:
 
 	# emerge -a twister