updated badge for build status

Author: danielrh

README.md

@@ -1,7 +1,7 @@
 # Framework for allocating memory in #![no_std] modules.
 
 [![crates.io](http://meritbadge.herokuapp.com/alloc-no-stdlib)](https://crates.io/crates/alloc-no-stdlib)
-[![Build Status](https://travis-ci.org/dropbox/alloc-no-stdlib.svg?branch=master)](https://travis-ci.org/dropbox/alloc-no-stdlib)
+[![Build Status](https://travis-ci.org/dropbox/rust-alloc-no-stdlib.svg?branch=master)](https://travis-ci.org/dropbox/rust-alloc-no-stdlib)
 
 
 ## Requirements