Merge pull request #204 from jfoshee/patch-1

For UpdateOnly added a multi-field example

Author: mythz

README.md

@@ -344,6 +344,11 @@ db.UpdateOnly(new Person { FirstName = "JJ" }, p => p.FirstName);
 ```
 **UPDATE "Person" SET "FirstName" = 'JJ'**
 
+```csharp
+db.UpdateOnly(new Person { FirstName = "JJ", Age = 12 }, p => new { p.FirstName, p.Age });
+```
+**UPDATE "Person" SET "FirstName" = 'JJ', "Age" = 12**
+
 When present, the second expression is used as the where filter:
 ```csharp
 db.UpdateOnly(new Person { FirstName = "JJ" }, p => p.FirstName, p => p.LastName == "Hendrix");
@@ -946,4 +951,4 @@ As [performance is the most important feature](https://github.com/mythz/ScalingD
     - Fast, supports dynamics and expandos, smart use of optional params to provide a wrist-friendly api, fits in a single class. Multiple RDBMS support. Requires .NET 4.
   * **[Simple.Data](https://github.com/markrendle/Simple.Data)** - by [@markrendle](http://twitter.com/markrendle)
     - A little slower than above ORMS, most wrist-friendly courtesy of a dynamic API, multiple RDBMS support inc. Mongo DB. Requires .NET 4.
-	
+