Add Dev14 support

Also remove incorrect copy local.

The solution should now build and install on VS 11, 12, and 14, and the build from any version should work on any other version.
OK... otherwise my next question was going to be "Should we do this with
the main NUnit projects as well?"

On Sun, Nov 9, 2014 at 9:12 AM, SLaks <notifications@github.com> wrote:

> In src/NUnitTestAdapterInstall/NUnitTestAdapterInstall.csproj:
>
> >      <MinimumVisualStudioVersion>12.0</MinimumVisualStudioVersion>
> > +  </PropertyGroup>
> > +  <!-- This is needed to prevent forced migrations when opening the project in Dev14 -->
> > +  <PropertyGroup Condition=" '$(VisualStudioVersion)' == '14.0' ">
> > +    <MinimumVisualStudioVersion>14.0</MinimumVisualStudioVersion>
> > +  </PropertyGroup>
>
> These are only needed in VS extension projects; the VS extension project
> type will automatically add a <MinimumVisualStudioVersion> for the
> current version. (I have no idea why they do that)
>
> @JaredPar <https://github.com/JaredPar> invented this trick to bypass the
> restriction.
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/nunit/nunit-vs-adapter/pull/53/files#r20059980>.
>