Merge pull request #20 from NancyFx/jchannon-patch-1

Removed json.net cake dependency

build.cake

@@ -1,5 +1,3 @@
-#addin "nuget:?package=Newtonsoft.Json&version=8.0.3"
-
 // Usings
 using System.Xml;
 using System.Xml.Linq;
@@ -48,12 +46,11 @@ Task("Update-Version")
   }
   var file = new FilePath("src/Nancy.Serialization.ProtoBuf/project.json");
 
-  var project = Newtonsoft.Json.Linq.JObject.Parse(
-    System.IO.File.ReadAllText(file.FullPath, Encoding.UTF8));
-  
-  project["version"].Replace(version);
-  
-  System.IO.File.WriteAllText(file.FullPath, project.ToString(), Encoding.UTF8);
+  var project = System.IO.File.ReadAllText(file.FullPath, Encoding.UTF8);
+
+  project = System.Text.RegularExpressions.Regex.Replace(project, "(\"version\":\\s*)\".+\"", "$1\"" + version + "\"");
+
+  System.IO.File.WriteAllText(file.FullPath, project, Encoding.UTF8);
 });