add nice travis-ci image
-# The `scuttlebutt` multi-party computation utilities toolkit
+# The `scuttlebutt` multi-party computation utilities toolkit [![](https://travis-ci.org/amaloz/scuttlebutt.svg?branch=master)](https://travis-ci.org/amaloz/scuttlebutt)
Or: "Where rust MPC libraries come to drink"
The `scuttlebutt` library provides a bunch of core primitives for building
