corrected travisci link

Author: adamcin

README.md

@@ -1,7 +1,7 @@
 httpsig-java
 ============
 
-[![Build Status](https://travis-ci.org/adamcin/httpsig-java.png)](https://travis-ci.org/adamcin/httpsig-java])
+[![Build Status](https://travis-ci.org/adamcin/httpsig-java.png)](https://travis-ci.org/adamcin/httpsig-java)
 
 Implementation of Joyent's [HTTP Signature Authentication](https://github.com/joyent/node-http-signature/blob/master/http_signing.md) in Java