Last attempt at Nuget for today

.travis.yml

@@ -1,4 +1,2 @@
 language: csharp
 solution: ./src/Artemis.sln
-install:
-  - travis_retry nuget restore -source "https://api.nuget.org/v3/index.json;https://www.myget.org/F/rgb_net/api/v3/index.json" ./src/Artemis.sln

src/NuGet.Config

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
+    <add key="RGB.NET MyGet" value="https://www.myget.org/F/rgb_net/api/v3/index.json" />
+  </packageSources>
+</configuration>