Added author to Conditional Callbacks

On Line 1446, gave credit to Ross Allen who wrote Conditional Callbacks

Author: ateich

README.md

@@ -1443,7 +1443,7 @@
 **Other Styles**
 
   - [Naming this in nested functions](https://gist.github.com/4135065) - Christian Johansen
-  - [Conditional Callbacks](https://github.com/airbnb/javascript/issues/52)
+  - [Conditional Callbacks](https://github.com/airbnb/javascript/issues/52) - Ross Allen
   - [Popular JavaScript Coding Conventions on Github](http://sideeffect.kr/popularconvention/#javascript) - JeongHoon Byun
   - [Multiple var statements in JavaScript, not superfluous](http://benalman.com/news/2012/05/multiple-var-statements-javascript/) - Ben Alman