Change Elasticsearch.Net.JsonNET target framework to 4.0

Closes #1053

Author: gmarz

build/Elasticsearch.Net.JsonNET.nuspec

@@ -14,6 +14,7 @@
     <description>This package is only useful if you use the low level client ONLY and do not use NEST but would like to use JSON.NET as your serializer</description>
     <dependencies>
       <dependency id="Elasticsearch.Net" version="1.2.1"/>
+	  <dependency id="Newtonsoft.Json" version="6.0.1"/>
     </dependencies>
     <tags>elasticsearch elastic search lucene thrift nest</tags>
   </metadata>

dep/repositories.config

@@ -7,7 +7,6 @@
   <repository path="../src/Nest/packages.config" />
   <repository path="../src/Profiling/Profiling.Indexing/packages.config" />
   <repository path="../src/Profiling/Profiling.InMemoryConnection/packages.config" />
-  <repository path="../src/Serialization/Elasticsearch.Net.JsonNET/packages.config" />
   <repository path="../src/Tests/Elasticsearch.Net.Integration.Yaml/packages.config" />
   <repository path="../src/Tests/Elasticsearch.Net.Tests.Unit/packages.config" />
   <repository path="../src/Tests/Nest.Tests.Integration/packages.config" />

src/Serialization/Elasticsearch.Net.JsonNET/Elasticsearch.Net.JsonNet.csproj

@@ -9,8 +9,9 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Elasticsearch.Net.JsonNet</RootNamespace>
     <AssemblyName>Elasticsearch.Net.JsonNet</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
+    <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -41,7 +42,7 @@
   <ItemGroup>
     <Reference Include="Newtonsoft.Json, Version=6.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\..\..\dep\Newtonsoft.Json.6.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
+      <HintPath>..\..\..\dep\Newtonsoft.Json.6.0.1\lib\net40\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
@@ -62,11 +63,12 @@
     </ProjectReference>
   </ItemGroup>
   <ItemGroup>
-    <None Include="keypair.snk" />
-    <None Include="packages.config" />
+    <None Include="packages.config">
+      <SubType>Designer</SubType>
+    </None>
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
- <PropertyGroup>
+  <PropertyGroup>
     <PreBuildEvent Condition=" '$(OS)' != 'Unix' ">IF NOT EXIST "$(SolutionDir)..\build\keys\keypair.snk" (CD "$(SolutionDir).." &amp;&amp; "build.bat" CreateKeysIfAbsent &amp;&amp; CD %25~dp0)
 </PreBuildEvent>
   </PropertyGroup>

src/Serialization/Elasticsearch.Net.JsonNET/packages.config

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="6.0.1" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="6.0.1" targetFramework="net40" />
 </packages>