Set sudo mode on travis builds

Author: natemcmaster

.travis.yml

@@ -1,5 +1,5 @@
 language: csharp
-sudo: false
+sudo: true
 dist: trusty
 mono: none
 dotnet: 2.1.4

README.md

@@ -1,8 +1,10 @@
 CommandLineUtils
 ================
 
+[![Travis build status][travis-badge]](https://travis-ci.org/natemcmaster/CommandLineUtils/branches)
 [![AppVeyor build status][appveyor-badge]](https://ci.appveyor.com/project/natemcmaster/CommandLineUtils/branch/master)
 
+[travis-badge]: https://img.shields.io/travis/natemcmaster/CommandLineUtils/master.svg?label=travis&style=flat-square
 [appveyor-badge]: https://img.shields.io/appveyor/ci/natemcmaster/CommandLineUtils/master.svg?label=appveyor&style=flat-square
 
 [![NuGet][main-nuget-badge]][main-nuget] [![MyGet][main-myget-badge]][main-myget]
@@ -122,4 +124,4 @@ The library also includes other utilities for interaction with the console. Thes
     Process.Start(DotNetExe.FullPathOrDefault(), "run");
     ```
 
-And more! See the docs for more API, such as `IConsole`, `IReporter`, and others.
+And more! See the docs for more API, such as `IConsole`, `IReporter`, and others.