Fix to visible the UI if is only 'q' query on the queryString. (#26)

* fix environment and docs for development.
* increment the version.
* upgrade for the scene of only 'q' in the queryString.

Author: ktrysmt

dist/manifest.json

@@ -1,7 +1,7 @@
 {
   "manifest_version": 2,
   "name": "Quick Custom GSearch",
-  "version": "0.8.0",
+  "version": "0.8.1",
   "description": "Quick access for custom search functions",
   "page_action": {
     "default_icon": "19.png"