Merge pull request #25 from Neorth/fix-missing-using

Fix Contrib.EntityFramework build

Author: xfischer

src/GeoJSON.Net.Contrib.EntityFramework/EntityFrameworkConvertToDbGeography.cs

@@ -1,4 +1,5 @@
-using System.Data.Entity.Spatial;
+using System;
+using System.Data.Entity.Spatial;
 using GeoJSON.Net.Geometry;
 using GeoJSON.Net.Contrib.Wkb.Conversions;
 

src/GeoJSON.Net.Contrib.EntityFramework/EntityFrameworkConvertToDbGeometry.cs

@@ -1,4 +1,5 @@
-using System.Data.Entity.Spatial;
+using System;
+using System.Data.Entity.Spatial;
 using GeoJSON.Net.Geometry;
 using GeoJSON.Net.Contrib.Wkb.Conversions;