Adding status badges

Author: pranavkm

README.md

@@ -1,5 +1,8 @@
 dnvm
 ====
+AppVeyor: [![AppVeyor](https://ci.appveyor.com/api/projects/status/969jbosi0qwc1awg/branch/dev?svg=true)](https://ci.appveyor.com/project/aspnetci/dnvm/branch/dev)
+
+Travis:   [![Travis](https://travis-ci.org/aspnet/dnvm.svg?branch=dev)](https://travis-ci.org/aspnet/dnvm)
 
 `dnvm` is the .NET Version Manager, a set of command line utilities to update and configure which .NET Runtime to use.