Documentation fix

Readme.md

@@ -52,17 +52,18 @@ To store and retrieve the non-JSON MongoDb primitives ([ObjectID](http://www.mon
 
 In particular, every document has a unique `_id` which can be almost any type, and by default a 12-byte ObjectID is created. ObjectIDs can be represented as 24-digit hexadecimal strings, but you must convert the string back into an ObjectID before you can use it in the database. For example:
 
-		// Get the objectID type
-		var ObjectID = require('mongodb').ObjectID;
-
+    // Get the objectID type
+    var ObjectID = require('mongodb').ObjectID;
+    
     var idString = '4e4e1638c85e808431000003';
     collection.findOne({_id: new ObjectID(idString)}, console.log)  // ok
     collection.findOne({_id: idString}, console.log)  // wrong! callback gets undefined
 
 Here are the constructors the non-Javascript BSON primitive types:
 
-		// Fetch the library
-		var mongo = require('mongodb');
+    // Fetch the library
+    var mongo = require('mongodb');
+		
 		// Create new instances of BSON types
     new mongo.Long(numberString)
     new mongo.ObjectID(hexString)