updated README with context manager example and bumped version num

README.rst

@@ -47,6 +47,19 @@ In the X Window System, Xvfb or X virtual framebuffer is an X11 server that perf
 
     vdisplay.stop()
 
+***************************************
+    Example: Usage as a Context Manager
+***************************************
+
+::
+    
+    from xvfbwrapper import Xvfb
+    
+    with Xvfb() as xvfb:
+        # launch stuff inside virtual display here.
+        # It starts/stops in this code block.
+
+
 **********************************************
     Example: Headless Selenium WebDriver Tests
 **********************************************

xvfbwrapper/__init__.py

@@ -1,3 +1,3 @@
 from xvfbwrapper import *
 
-__version__ = '0.2.2'
+__version__ = '0.2.3'