message: Added some Signus tests.
diff: <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <ItemGroup>
  + <Reference Include="Base58Check, Version=0.2.0.0, Culture=neutral, processorArchitecture=MSIL">
  + <HintPath>..\packages\Base58Check.0.2.0\lib\Net40\Base58Check.dll</HintPath>
  + </Reference>
  <Reference Include="Microsoft.VisualStudio.TestPlatform.TestFramework, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
  <HintPath>..\packages\MSTest.TestFramework.1.1.18\lib\net45\Microsoft.VisualStudio.TestPlatform.TestFramework.dll</HintPath>
  </Reference>
  <Compile Include="Wrapper\PoolTests\RefreshPoolTest.cs" />
  <Compile Include="Wrapper\PoolTests\OpenPoolTest.cs" />
  <Compile Include="Wrapper\PoolTests\DeletePoolTest.cs" />
  + <Compile Include="Wrapper\SignusTests\SignTest.cs" />
  + <Compile Include="Wrapper\SignusTests\ReplaceKeysTest.cs" />
  + <Compile Include="Wrapper\SignusTests\CreateMyDidTest.cs" />
  <Compile Include="Wrapper\WalletTests\CloseWalletTest.cs" />
  <Compile Include="Wrapper\WalletTests\CreateWalletTest.cs" />
  <Compile Include="Properties\AssemblyInfo.cs" />
  <Name>indy-sdk-dotnet</Name>
  </ProjectReference>
  </ItemGroup>
  - <ItemGroup>
  - <Folder Include="Wrapper\SignusTests\" />
  - </ItemGroup>
  + <ItemGroup />
  <ItemGroup>
  <None Include="packages.config" />
  </ItemGroup>
  