Update README to configure pjsip
diff --git a/README b/README
index 6c9ab37..7499cc7 100644
--- a/README
+++ b/README
@@ -23,6 +23,11 @@
   jni/sflphone/daemon/src/JavaJNI2CJNI_Load.py
   make-swig.sh
 
+Compile pjsip-android
+cd jni/pjsip-androi/android
+./configure-android --disable-audio
+make dep && make
+
 $ ndk-build -j4
 
 Check that no errors occurred. In particular, following files should have been generated by make-swig.sh: