Added missing file reference.

Author: yallie

source/Zyan.Communication/Zyan.Communication.Android.csproj

@@ -241,6 +241,7 @@
     <Compile Include="Protocols\Wrapper\MessageSinkWrapper.cs" />
     <Compile Include="Security\AuthCredentials.cs" />
     <Compile Include="Security\BasicWindowsAuthProvider.cs" />
+    <Compile Include="Security\DomainHelper.cs" />
     <Compile Include="Security\Exceptions\AccountLockedException.cs" />
     <Compile Include="Security\Exceptions\AccountNotFoundException.cs" />
     <Compile Include="Security\Exceptions\PasswordExpiredException.cs" />