Adding missing project reference (thanks, again, VS)

Author: codekaizen

src/NHibernate.Search/NHibernate.Search.csproj

@@ -64,6 +64,9 @@
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\packages\Lucene.Net.2.9.4.1\lib\net40\Lucene.Net.dll</HintPath>
     </Reference>
+    <Reference Include="NHibernate">
+      <HintPath>..\packages\NHibernate.3.3.1.4000\lib\Net35\NHibernate.dll</HintPath>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.configuration" />
     <Reference Include="System.Data" />