v3.18.0 version bump (#142)

diff --git a/package.json b/package.json
index 09678f2..c382673 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "openwhisk",
-  "version": "3.17.0",
+  "version": "3.18.0",
   "description": "JavaScript client library for the OpenWhisk platform",
   "main": "lib/main.js",
   "typings": "lib/main.d.ts",