diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ea335a..be89615 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+1.4.0
+-----------------
+- Added connection object with additional connection settings
+
+1.2.0
+-----------------
+- Added findOne method. Thanks @youanswer.
+
 1.1.0
 -----------------
 - Bumped version of node-mongodb-native to 2.0.31
diff --git a/README.md b/README.md
index 74981ec..ddc3cc7 100644
--- a/README.md
+++ b/README.md
@@ -247,17 +247,21 @@ db.multiUpdate(
 
 
 ## save()
-It saves a document. If _id is provided in document body, then document is updated,
-  otherwise, it is inserted
-  It maps to mongo-native driver function, but with a promise.
+Saves a document.
+If _id is provided in document body, then document is updated, otherwise, it is inserted.
+It maps to mongo-native driver function, but with a promise.
 
 ### Params
 - collecction  *string* collection name
 - document     *object* the document body. (it can have _id)
+
 ### Returns
-- promise of document   *object*|*number* if _id was not provided, and then it was an insertion,
-                                    it will return the document with "_id" field.
-                                    Otherwise it will return 1 if existing document was updated
+- promise of nrModified   *number* | *object*
+
+Returns promise of 0 if document was not modified.
+Returns promise of 1 if document was modified
+Returns promise of document object if document was inserted
+
 ### Basic usage
 ```
 //saving a non existing document
@@ -267,9 +271,10 @@ db.save(
     title: "Javascript 101",
     authors: ["java ninja dev"]
 
-).then(function(doc){
-  //document with _id field
+).then(function(obj){
+  console.log(obj._id);
 });
+
 //saving an existing document
 db.save(
   "book",
@@ -278,8 +283,8 @@ db.save(
     title: "jQuery for newbies",
     author: "some jQuery guru"
   }
-).then(function(doc){
-  //doc will be 1
+).then(function(nrModified){
+  // number of modified records (0 or 1)
 });
 ```
 
diff --git a/mongo-driver.js b/mongo-driver.js
index 7e9bf14..c31f2a0 100644
--- a/mongo-driver.js
+++ b/mongo-driver.js
@@ -15,20 +15,11 @@ var mongoclient   = require("mongodb").MongoClient,
 /*
 
 */
-driver.connect = function(connection) {
-
-  check.assert.unemptyString(connection,
-    "Invalid connection param, must be a non empty string");
-  if (!(/^(mongodb\:\/\/)([\w\.]+|([0-9]{1,3}\.){3}[0-9]{1,3})(\:\d+\/\w+)(\?.*)?$/i).
-      test(connection)) {
-    throw new Error(
-      "Invalid connection param, must be in form of mongodb://<host>:<port>/<dbname>"
-    );
-  }
+driver.connect = function(connection, connectionObject) {
 
-  var connect = node.lift(mongoclient.connect),
-      db      = {};
 
+  var connect = node.lift(mongoclient.connect),
+      db = {};
 
   /*
   find
@@ -293,7 +284,11 @@ driver.connect = function(connection) {
         defer.reject(err);
       }
       else {
-        defer.resolve(data.result.nModified ? data.result.nModified : data.ops[0]);
+        defer.resolve(
+          data.ops && data.ops[0] ?
+            data.ops[0] :
+            data.result.nModified
+        );
       }
     });
 
@@ -412,7 +407,7 @@ driver.connect = function(connection) {
   };
 
   //connect with mongodb via native driver and return db custom object.
-  return connect(connection).then(function(mongodb){
+  return connect(connection, connectionObject).then(function(mongodb){
 
     db._mongodb = mongodb;
 
diff --git a/package.json b/package.json
index b7a1fe2..3b98986 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mongo-driver",
-  "version": "1.1.0",
+  "version": "1.4.0",
   "description": "A wrapper around mongo native that uses promises instead of callbacks",
   "main": "mongo-driver.js",
   "scripts": {
@@ -8,7 +8,7 @@
   },
   "dependencies": {
     "check-types": "3.2.0",
-    "mongodb": "2.0.31",
+    "mongodb": "2.0.39",
     "when": "3.7.3"
   },
   "devDependencies": {
diff --git a/tests/mongo-driver.test.js b/tests/mongo-driver.test.js
index 53cf8f4..4e8ffc6 100644
--- a/tests/mongo-driver.test.js
+++ b/tests/mongo-driver.test.js
@@ -16,29 +16,27 @@ var driver  = require("../mongo-driver"),
 describe("mongo-driver", function(){
 
   var conn = "mongodb://localhost:27017/test",
+      connObj = {auto_reconnect: true, slaveOk: true },
       db;
 
   describe("connection", function(){
 
-    it("throws error if connection is not provided", function(){
-      expect( driver.connect.bind(driver) ).
-        to.throw(Error, /non[\s\w]+empty[\s\w]+string/i );
-    });
 
     it("throws error if connection is malformed", function(){
       var conns = [
+        "",
         "537f6fd2d11fa3c6054a8068",
-        "localhost:27017/test",
-        "mongodb://localhost:27017",
-        "mongodb://:27017/test",
-        "mongodb://:ADF/test"
+        "some nonesense"
       ];
       conns.forEach(function(e){
-        expect( driver.connect.bind(driver, e) ).
-          to.throw(Error, /invalid\sconnection\sparam/i );
+        driver.connect(e).should.be.rejected;
       });
     });
 
+    it("does not reject when url includes username and password", function(done){
+      driver.connect("mongodb://me_development:unoDosNahTr3s@localhost:27017").should.be.rejectedWith('Authentication failed').notify(done);
+    });
+
 
     // TIMEOUT PROBLEM TEST FAILING SOMETIMES TODO: FIX
     // it("throws error if cannot reach host", function(done){
@@ -63,6 +61,16 @@ describe("mongo-driver", function(){
           notify(done);
     });
 
+    it("connect succesfuly with: " + conn + " and connectionObject:" + connObj, function(done){
+      driver.connect(conn, connObj).
+        then(function(_db){
+          db = _db; //passing to global reference (trick)
+          return _db;
+        }).
+        should.eventually.contain.keys("find","insert").
+          notify(done);
+    });
+
   });
 
   describe("features", function(){
@@ -663,6 +671,24 @@ describe("mongo-driver", function(){
         });
       });
 
+      it("works when you save with _id unmodified", function(done) {
+        var p;
+        db.find(
+          "book",
+          {
+            title: /dracula/i
+          }
+        ).then(function(books){
+          p = db.save(
+            "book",
+            books[0]
+          );
+          p.should.eventually.be.an("number").
+            should.eventually.equals(0).notify(done);
+        });
+
+      });
+
     });
 
     describe("saveComplete", function(){