update readme.md

@@ -7,7 +7,7 @@
 
 | Name |Version |
 | ------ | ------ |
-| firefox | 100.0.2 |
+| firefox | 100.0.2 or 101.0 |
 | nodejs | 16.15.0 |
 | npm | 8.10.0 |
 | geckodriver | 0.31.0-linux64 |
@@ -29,6 +29,29 @@ and add setting.json at root directory for channel access
     "pw": "<ECampus PW>"
 }
 ```
+
+## Firefox Installation on AWS EC2
+
+```sh
+$ cd /usr/local
+$ wget http://ftp.mozilla.org/pub/firefox/releases/101.0/linux-x86_64/en-US/firefox-101.0.tar.bz2
+$ tar xvjf firefox-101.0.tar.bz2
+sudo ln -s /usr/local/firefox/firefox /usr/bin/firefox 
+```
+
+Please Note that some amazon image requires to install dependency manually.
+
+```sh
+$ sudo yum install libXinerama.x86_64 cups-libs dbus-glib
+$ sudo yum install gtk3-devel
+```
+
+You can verify that installation is complete via
+
+```sh
+$ firefox -v
+```
+
 # Usage
 
 # Roadmap