Update README.md

README.md

@@ -65,18 +65,13 @@ labelme_on_docker examples/semantic_segmentation/data_annotated
 **Ubuntu**
 
 ```bash
-# Ubuntu 14.04 + Python 2 + PyQt4
-sudo apt-get install python-qt4 pyqt4-dev-tools
+# Ubuntu 14.04 / Ubuntu 16.04
+# Python 2
+# sudo apt-get install python-qt4 pyqt4-dev-tools  # PyQt4
+sudo apt-get install python-pyqt5 pyqt5-dev-tools  # PyQt5
 sudo pip install labelme
-# Ubuntu 14.04 + Python 3 + PyQt5
-sudo apt-get install python3-pyqt5 pyqt5-dev-tools
-sudo pip3 install labelme
-
-# Ubuntu 16.04 + Python 2 + PyQt5
-sudo apt-get install python-pyqt5 pyqt5-dev-tools
-sudo pip install labelme
-# Ubuntu 16.04 + Python 3 + PyQt5
-sudo apt-get install python3-pyqt5 pyqt5-dev-tools
+# Python 3
+sudo apt-get install python3-pyqt5 pyqt5-dev-tools  # PyQt5
 sudo pip3 install labelme
 ```