ci: update travis badge

Author: vinkla

README.md

@@ -1,6 +1,6 @@
 # atom-ide-definitions package
 
-[![Build Status](https://api.travis-ci.org/atom-ide-community/atom-ide-definitions.png)](https://travis-ci.org/atom-ide-community/atom-ide-definitions)
+[![Build Status](https://badgen.net/travis/atom-ide-community/atom-ide-definitions/master)](https://travis-ci.org/atom-ide-community/atom-ide-definitions)
 
 A replacement of the definitions functionality from the original Atom-IDE / Nuclide package developed by Facebook.