Fixing travis href

Author: lcustodio

README.md

@@ -21,12 +21,12 @@ This is an implementation of [JSON Pointer](http://tools.ietf.org/html/draft-iet
     All tests pass.
     $
 
-[![Build Status](https://travis-ci.org/janl/node-jsonpointer.png?branch=master)](undefined)
+[![Build Status](https://travis-ci.org/janl/node-jsonpointer.png?branch=master)](https://travis-ci.org/janl/node-jsonpointer)
 
 ## Author
 
 (c) 2011 Jan Lehnardt <jan@apache.org>
 
 ## License
 
-MIT License.
+MIT License.