adding re env setup

jadx/install_jadx.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+#
+
+
+printf "\nInstalling Jadx..\n"
+
+
+git clone https://github.com/skylot/jadx.git
+
+
+cd jadx
+
+./gradlew dist
+
+
+#export PATH=$PATH:path/to/build/jadx/bin/jadx
+
+
+
+