Update README with link to local docs

README.md

@@ -7,4 +7,8 @@ Install from the command line like so:
 
     raco pkg install pollen
     
-Scribble docs are installed with the package.
+And update like so:
+
+    raco pkg update pollen
+
+Scribble docs are installed with the package. Or you can [read the docs here](http://mbutterick.github.io/pollen/doc/).