Fix build status badges [ci-skip]

Author: TheBB

README.md

@@ -1,6 +1,7 @@
 # libgit2 bindings for Emacs
 
-![Build status](https://travis-ci.org/TheBB/spaceline.svg "Build Status")
+![Build status](https://travis-ci.org/TheBB/libegit2.svg?branch=master "Build Status")
+![Build status](https://ci.appveyor.com/api/projects/status/9luwajwnw04pgnhx/branch/master?svg=true "Build Status")
 
 This is an *experimental* module for libgit2 bindings to Emacs, intended to boost the performance of
 [magit](https://github.com/magit/magit).