added hexdump to pip install

hexdump wasn't installed by default, but used in static2. Although the import
was in a try-catch block, various uses were not guarded and resulted in an
error. Easiest solution: install hexdump.

install.sh

@@ -38,7 +38,7 @@ fi
 
 echo "installing pip packages"
 # we install more than we strictly need here, because pip is so easy
-sudo $PIP install --upgrade six html flask-socketio pillow pyelftools socketIO-client pydot ipaddr capstone ./qiradb
+sudo $PIP install --upgrade six html flask-socketio pillow pyelftools socketIO-client pydot ipaddr capstone hexdump ./qiradb
 
 echo "making symlink"
 sudo ln -sf $(pwd)/qira /usr/local/bin/qira