Add framework version to 3.5 and 4.0 configs

Author: samcayford

TinCan/TinCan.csproj

@@ -29,6 +29,7 @@
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Documentation|AnyCPU'">
     <DebugSymbols>true</DebugSymbols>
@@ -48,6 +49,7 @@
     <PlatformTarget>AnyCPU</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release-net45|AnyCPU'">
     <OutputPath>bin\Release\net45\</OutputPath>