Add Travis CI support

.Travis.yml

@@ -0,0 +1,7 @@
+language: csharp
+dist: trusty
+sudo: required
+mono: none
+dotnet: 1.0.0-preview2-003131
+script:
+  - ./build.sh verify

build.sh

@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+dotnet restore && dotnet build **/project.json