fixup! TravisCI to use dotnetcore

Cory Thompson · Cory Thompson · commit 13e70f4bb559 · 2017-08-05T13:24:18.000+10:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,4 +1,5 @@
 language: csharp
+dist: trusty
 mono: none
 dotnet: 1.0.1
 
