Updated install docs to include latest capstone

INSTALL.md

@@ -46,10 +46,19 @@ $ sudo pip3 install pyqtgraph
 Binwalk's `--disasm` option requires the [Capstone](http://www.capstone-engine.org/) disassembly framework and its corresponding Python bindings:
 
 ```bash
-$ wget http://www.capstone-engine.org/download/2.1.2/capstone-2.1.2.tgz
-$ tar -zxvf capstone-2.1.2.tgz
-$ (cd capstone-2.1.2 && ./make.sh && sudo make install)
-$ (cd capstone-2.1.2/bindings/python && sudo python ./setup.py install)
+# Python2.7
+$ wget http://www.capstone-engine.org/download/3.0.1/capstone-3.0.1.tgz
+$ tar -zxvf capstone-3.0.1.tgz
+$ (cd capstone-3.0.1 && ./make.sh && sudo make install)
+$ (cd capstone-3.0.1/bindings/python && sudo python ./setup.py install)
+```
+
+```bash
+# Python3.x
+$ wget http://www.capstone-engine.org/download/3.0.1/capstone-3.0.1.tgz
+$ tar -zxvf capstone-3.0.1.tgz
+$ (cd capstone-3.0.1 && ./make.sh && sudo make install)
+$ (cd capstone-3.0.1/bindings/python && sudo python3 ./setup.py install)
 ```
 
 Binwalk relies on multiple external utilties in order to automatically extract/decompress files and data: