diff -r 000000000000 -r 6474c204b198 toolkit/devtools/pretty-fast/UPGRADING.md
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/devtools/pretty-fast/UPGRADING.md	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,7 @@
+# UPGRADING
+
+1. `git clone https://github.com/mozilla/pretty-fast.git`
+
+2. Copy `pretty-fast/pretty-fast.js` to `toolkit/devtools/pretty-fast/pretty-fast.js`
+
+3. Copy `pretty-fast/test.js` to `toolkit/devtools/pretty-fast/tests/unit/test.js`