Fixed Markdown code blocks formatting

README.markdown

@@ -8,46 +8,54 @@ Installation
 	https://github.com/openkinect/libfreenect
 		
 3. Build and install the python wrappers for libfreenect
+
 		cd libfreenect/wrappers/python
 		python setup.py install
 
 4. Download the latest version of this project
+
 		git clone https://github.com/amiller/libfreenect-goodies.git
 		cd pykinect
 		
 5. Test that python can find libfreenect by running:
+
 		python demo_freenect.py
 
 
 Usage instructions
 ------------------
 
 0. Please run this script using:
+
 		ipython -pylab -wthread demo_pykinect.py
 
 1. You should see an opengl window pop up with a preview of a point cloud. You can pan and 
   zoom with the mouse. Run the following commands:
-  	update()      # Grabs one frame from kinect and updates the point cloud
-  	update_on()   # Grabs frames from kinect on a thread - 3d Video! (might be slow!)
-  	update_off()  # Stops the update thread
+
+		update()      # Grabs one frame from kinect and updates the point cloud
+ 		update_on()   # Grabs frames from kinect on a thread - 3d Video! (might be slow!)
+		update_off()  # Stops the update thread
 
 2. You can also use opencv:
-  	loopcv()      # Grab frames and display them as a cv image
-   	(ctrl+c to break)
+
+		loopcv()      # Grab frames and display them as a cv image
+		(ctrl+c to break)
 
 3. You can also use matplotlib:
-  	imshow(depth)
+
+		imshow(depth)
 
 4. Most importantly, you can reload any of the code without pausing or destroying your 
   python instance:
-  	%run -i demo_pykinect.py
+
+		%run -i demo_pykinect.py
 
   Try changing some of the code, like the downsampling factor (search: downsampling)
-  or the point size (search: GL_POINT_SIZE) and update the code without quitting python.
+  or the point size (search: `GL_POINT_SIZE`) and update the code without quitting python.
 
 This is an ideal environment for developing 3D point cloud algorithms and visualizations.
 All of your tools are right at hand. 
 
-Note to MATLAB users: 
+**Note to MATLAB users:**  
   Yes, MATLAB already does most of this... there are plenty of reasons to prefer python,
-  one of which is access to OpenGL drawing commands - scatter3 isn't adequate!
+  one of which is access to OpenGL drawing commands - scatter3 isn't adequate!