Update README.md

Author: hugohadfield

README.md

@@ -22,6 +22,8 @@ This would spawn a cefpython window displaying the random lines that you have dr
 ```
 git clone git@github.com:hugohadfield/pyganja.git
 cd pyganja
+git submodule init
+git submodule update
 python3 setup.py install
 ```