dotnet add package should normalize the version range it writes to csproj

[joelverhagen]

dotnet.exe add package newtonsoft.json --version 10.00.1

In the .csproj:

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp1.1</TargetFramework>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="newtonsoft.json" Version="10.00.1" />
  </ItemGroup>
</Project>

When the same thing is done from PMC in VS, the result is different:

Install-Package newtonsoft.json -Version 10.00.1

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp1.1</TargetFramework>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="newtonsoft.json" Version="10.0.1" />
  </ItemGroup>
</Project>

We should also consider writing the proper casing of the ID from the installed package.

/cc @mishra14

This is low priority as it is purely aesthetic.