android: fix gobind's path in upspin repo

Change-Id: I0a907d4c07ea8d3c28db2760d44b7d2338663413
diff --git a/README b/README
index 298e84f..45640e5 100644
--- a/README
+++ b/README
@@ -12,7 +12,7 @@
   + Tools > Android > SDK Manager
 
 - Build go bindings for Android:
-  + cd $GOPATH/src/upspin.io/client/gobind
+  + cd $GOPATH/src/upspin.io/exp/client/gobind
   + go generate
 
 - Import the .aar created in the step above: