Update README.md

blankwall · blankwall · commit 305ebd02a733 · 2015-01-18T19:21:16.000-05:00
diff --git a/README.md b/README.md
@@ -6,6 +6,8 @@ Python bindings for pin.
 
 # Build Instructions
 
+Pre-requisite is python-dev `sudo apt-get install python-dev` on Ubuntu.
+
 Copy the entire directory into ~/pin/source/tools
 
 Type make and enjoy!
