add a couple of instructions

README.md

@@ -1,4 +1,30 @@
 mod_bcg729
 ==========
 
-FreeSWITCH G.729 module using the opensource bcg729 implementation by Belledonne Communications
+FreeSWITCH G.729 module using the opensource bcg729 implementation by Belledonne Communications.
+
+Simple G.729 codec for FreeSWITCH using the Belledone Communications G.729 GPLv2 implementation.
+Please see http://www.linphone.org/eng/documentation/dev/bcg729.html for further informations.
+
+To use G.729 or G.723.1 you may need to pay a royalty fee.
+Please see http://www.sipro.com for details.
+Please note that this code is available for you to download for education purposes 
+only and if a patent exists in your country for G.729 then you should contact 
+the owner of that patent and request their permission before executing the code.
+
+You can get a licensed, faster and supported G.729 codec by purchasing licenses
+directly from FreeSWITCH guys http://www.freeswitch.org/node/235 .
+This will have the side effect to support the FreeSWICTH project ;)
+
+Installation
+============
+You need to have git on your build machine and internet access, since
+the Makefile will try to checkout bcg729 sources and build them.
+
+Edit Makefile and edit FS_INCLUDES, FS_MODULES vars to point where
+your FreeSWICTH includes are and where you want to install the module.
+
+After, just type make and, if build completes without errors, make install .
+
+Edit autoload_configs/modules.conf.xml , comment out mod_g729 and add mod_bcg729 .
+Now restart your FreeSWICTH and you're done.