Add README.md

mwilliamson · mwilliamson · commit f61a85415b2e · 2014-04-23T10:46:46.000+01:00
diff --git a/README.md b/README.md
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+Hello world written in C, but without using any libraries. Assumes that you're
+running Linux on AMD64.
+
+This was the result of a pair programming session with @thatismatt.
