diff --git a/README.md b/README.md
index efb5b61..c6def15 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,46 @@
 # docker\-android\-vm #
+An Android virtual machine (Android7.2-x86) runs in a docker container and supports saving/restoring a state during testing. This is a general framework that powers existing Android testing techniques with time-travel testing. 
 
-docker build -t zhendong/3tdroid .
+## Publication ##
+```
+@InProceedings{zhendong:icse:2020,
+author = {Zhen Dong, Marcel B\"ohme, Lucia Cojocaru, Abhik Roychoudhury},
+titile = {Time-travel Testing of Android Apps},
+booktitle = {Proceedings of the 42nd International Conference on Software Engineering},
+series = {ICSE '20},
+year = {2020}
+}
 
+```
+## Instructions ##
+The framework runs on Ubuntu 16.04 with docker installed.
+
+### build a docker image ###
+
+* git clone https://github.com/DroidTest/docker-android-vm.git
+* cd docker-android-vm/docker 
+* docker build -t droidtest/android7-vm . 
+
+### Usage ###
+ * Launch a vm with GUI (default adb port: 6666) 
+ 
+```
+docker run -it --privileged -e DISPLAY=$DISPLAY --net=host -v $HOME/.Xauthority:/root/.Xauthority:rw -v /dev:/dev droidtest/android7-vm  /root/docker-android-vm/scripts/launch_vm.sh Android_7 6666 gui
+```
+
+* Launch a vm with headless 
+```
+docker run -it --privileged -v /dev:/dev droidtest/android7-vm  /root/docker-android-vm/scripts/launch_vm.sh Android_7 6666 headless
+```
+* Test an app with Monkey in gui modle (delay:100ms, 100 events, $APK=local path of app under test)
+
+```
+docker run -it --rm --privileged -e DISPLAY=$DISPLAY --net=host -v $HOME/.Xauthority:/root/.Xauthority:rw -v /dev:/dev -v $APK:/root/aut.apk:ro droidtest/android7-vm  /root/docker-android-vm/scripts/run_monkey.sh Android_7 6666 gui 100 100
+```
+* Save and restore a state after launching a vm
+
+```
+
+```
 
-docker run -it --rm --privileged -e DISPLAY=$DISPLAY --net=host -v $HOME/.Xauthority:/root/.Xauthority:rw -v /dev:/dev -v /home/dz/Android_7_Exper/batch2/Fox_News.apk:/root/aut.apk:ro zhendong/3tdroid  /root/3TDroid/scripts/run_monkey.sh Android_7 6666 gui 100 50