bump package version to 0.0.13 (#14)

diff --git a/client/package.json b/client/package.json
index ab2d0c1..f6e1b4f 100644
--- a/client/package.json
+++ b/client/package.json
@@ -1,6 +1,6 @@
 {
   "name": "openwhisk-debugger",
-  "version": "0.0.12",
+  "version": "0.0.13",
   "description": "A debugger for OpenWhisk",
   "repository": "https://github.ibm.com/nickm/owdbg",
   "main": "client.js",