Add change locale example to JS SDK

js_sdk/change_locale.js

@@ -0,0 +1,9 @@
+// Reference:
+// https://sdk-docs.glia.com/visitor-js-api/current/Salemove.html#setLocale
+// Sets the locale for the Glia Visitor App. Upon initialization the Visitor App 
+// is set to the default locale configured for the site. This function can be used
+// to change the locale of the Visitor App at any time after initialization.
+
+sm.getApi({ version: 'v1' }).then(function (api) {
+    api.setLocale('en-US'); //Set the locale key here
+  });