added codecov index test file and updated package json

Author: JohnstonCode

coverconfig.json

@@ -0,0 +1,9 @@
+{
+  "enabled": true,
+  "relativeSourcePath": "../src",
+  "relativeCoverageDir": "../../coverage",
+  "ignorePatterns": ["**/node_modules/**"],
+  "includePid": false,
+  "reports": ["json", "html", "lcov"],
+  "verbose": false
+}