added travis badge to readme

README.md

@@ -1,5 +1,7 @@
 # ZEROLIB
 
+![build status](https://api.travis-ci.org/01010111/zerolib.png)
+
 Zerolib is a library of extensions, utilities, and other helpful classes for making games quickly in haxeflixel!
 
 ## Installing
@@ -30,4 +32,4 @@ This section includes a bunch of classes to help you out in your flixel adventur
 This is the smallest section and just contains some classes that I use often in my own projects.
 
 **[See example usage in the Wiki](https://github.com/01010111/zerolib/wiki)**  
-**[Browse the API](http://01010111.com/zerolib/)**
+**[Browse the API](http://01010111.com/zerolib/)**