Update README.md

Stericson · Stericson · commit dc4091440a4a · 2014-12-30T16:21:47.000-05:00
diff --git a/README.md b/README.md
@@ -3,3 +3,8 @@ RootTools provides rooted developers a standardized set of tools for use in the
 You can find the latest release here: https://github.com/Stericson/RootTools/releases
 
 You can find more informaiton on our wiki: https://github.com/Stericson/RootTools/wiki
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+For a more slimmed down library, check out RootShell:
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+https://github.com/Stericson/RootShell
