feat: add handshake function

Author: eduardoboucas

lib/index.js

@@ -182,6 +182,17 @@ DataStore.prototype.find = function ({ query, collection, options = {}, schema,
   })
 }
 
+/**
+ * Responds to API with information about the data connector module.
+ *
+ * @return {Object}
+ */
+DataStore.prototype.handshake = function () {
+  return {
+    version: '4.1.0'
+  }
+}
+
 /**
  * Insert documents into the database
  *