Make file version match assembly version

Fixes #37

Author: whitema

src/Serilog.Sinks.Async/Serilog.Sinks.Async.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <Description>Asynchronous sink wrapper for Serilog.</Description>
-    <AssemblyVersion>1.0.0</AssemblyVersion>
+    <AssemblyVersion>1.3.1.0</AssemblyVersion>
     <VersionPrefix>1.3.1</VersionPrefix>
     <Authors>Jezz Santos;Serilog Contributors</Authors>
     <TargetFrameworks>net45;netstandard1.1</TargetFrameworks>