Change targets from core to standard + net45 + net46

Author: Cory Thompson

WebPush/WebPush.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard1.1;netcoreapp1.0;netcoreapp1.1;netcoreapp2.0</TargetFrameworks>
+    <TargetFrameworks>netstandard1.1;netstandard2.0;net45;net46</TargetFrameworks>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <Version>1.0.10</Version>
     <Authors>Cory Thompson</Authors>