add a simple script to help people enabling the extension.
diff --git a/enable.sh b/enable.sh
new file mode 100755
--- /dev/null
+++ b/enable.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+here=`readlink -f "$0"`
+repo_root=`dirname "$here"`
+
+echo "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" >&2
+echo "XXX Add the line below to the [extensions] section of you hgrc XXX" >&2
+echo "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" >&2
+echo >&2
+echo >&2
+echo "[extensions]"
+echo "### experimental extensions for history rewriting"
+echo
+echo "# obsolete relation support (will move in core)"
+echo "obsolete=${repo_root}/hgext/obsolete.py"
+echo
+echo "# history rewriting UI"
+echo "evolve=${repo_root}/hgext/evolve.py"