Can specify 2 or 3 args and still get desired results

lib/datastore.js

@@ -377,7 +377,20 @@ Datastore.prototype.count = function(query, callback) {
  * If no callback is passed, we return the cursor so that user can limit, skip and finally exec
  * @param {Object} query MongoDB-style query
  */
-Datastore.prototype.find = function (query, callback) {
+Datastore.prototype.find = function (query, projection, callback) {
+  switch (arguments.length) {
+    case 1:
+      projection = {};
+      // callback is undefined, will return a cursor
+      break;
+    case 2:
+      if (typeof projection === 'function') {
+        callback = projection;
+        projection = {};
+      }
+      break;
+  }
+
   var cursor = new Cursor(this, query, function(err, docs, callback) {
     var res = [], i;
 
@@ -547,4 +560,6 @@ Datastore.prototype.remove = function () {
 
 
 
+
+
 module.exports = Datastore;