Change README

README

 This is SFLPhone-0.4 release.
 
 You need ccrtp-1.3.0 which needs commoncpp2>=1.3.0
-libeXosip-0.9.0 needs libosip2-2.2.0
+libeXosip2-1.9.1-pre15 needs libosip2-2.2.0
 You also need PortAudio_v19
 See http://www.sflphone.org/#downloads to download required libraries.
 
@@ -23,7 +23,7 @@ Dependencies build instructions:
 	make
 	make install
 
-4/ 	For libeXosip-0.9.0
+4/ 	For libeXosip2-1.9.1-pre15
 	./configure --disable-josua [option]
 	make
 	make install