Use dotnet 2.0 in travis build.

Dirk Lemstra · Dirk Lemstra · commit 68982cac669e · 2018-01-27T01:50:38.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -9,7 +9,7 @@ branches:
 
 matrix:
   include:
-    - dotnet: 1.0.4
+    - dotnet: 2.0.0
       mono: none
       dist: trusty
 
