From a550ee426d6e1e672e6e16469d4957feec0e85cf Mon Sep 17 00:00:00 2001
From: tzutalin <tzu.ta.lin@gmail.com>
Date: Sat, 22 Oct 2016 10:27:50 +0800
Subject: [PATCH] Update README and add clean in Makefile

---
 Makefile  |  2 ++
 README.md | 21 ++++++++++++---------
 2 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/Makefile b/Makefile
index 28aa5a63..41372dc1 100644
--- a/Makefile
+++ b/Makefile
@@ -4,3 +4,5 @@ all: resources.py
 %.py: %.qrc
 	pyrcc4 -o $@ $<
 
+clean: $(shell git clean -fd)
+
diff --git a/README.md b/README.md
index fe6141bb..3752b03f 100644
--- a/README.md
+++ b/README.md
@@ -20,13 +20,15 @@ The annotation file will be saved as an XML file. The annotation format is PASCA
 Requires at least [Python 2.6](http://www.python.org/getit/) and has been tested with [PyQt
 4.8](http://www.riverbankcomputing.co.uk/software/pyqt/intro).
 
-In order to build the resource and assets, you need to install pyqt4-dev-tools:
+In order to build the resource and assets, you need to install pyqt4-dev-tools and lxml:
+```
+$ sudo apt-get install pyqt4-dev-tools
+$ sudo pip install lxml
+$ make all
+$ ./labelImg.py
+```
 
-`$ sudo apt-get install pyqt4-dev-tools`
-
-`$ make all`
-
-`$ ./labelImg.py`
+Mac requires "$ brew install libxml2" when installing lxml
 
 * Windows
 
@@ -34,9 +36,10 @@ Need to download and setup [Python 2.6](https://www.python.org/downloads/windows
 
 Open cmd and go to [labelImg]
 
-`$ pyrcc4 -o resources.py resources.qrc`
-
-`$ python labelImg.py`
+```
+$ pyrcc4 -o resources.py resources.qrc
+$ python labelImg.py
+```
 
 ## Usage
 After cloning the code, you should run `$ make all` to generate the resource file.