Merge pull request #163 from Metallicow/README-branch

Add combined image to GitHub front page README.md

README.md

 The Micro Python project
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+<p align="center">
+  <img src="https://raw2.github.com/micropython/micropython/master/logo/upython-with-micro.png" alt="MicroPython Logo"/>
+</p>
 
 This is the Micro Python project, which aims to put an implementation
 of Python 3.x on a microcontroller.