updated yml file

Abdirahiim · Abdirahiim · commit 61c1cdabc1c0 · 2020-04-06T18:23:15.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,4 +1,6 @@
 language: csharp
+dist: xenial
 mono: none
+sudo: required
 dotnet: 2.0
 solution: "CovidSharp/CovidSharp/CovidSharp.csproj"
