Update README.md

Author: koush

README.md

@@ -106,7 +106,8 @@ AsyncHttpClient.getDefaultInstance().getFile(url, filename, new AsyncHttpClient.
 ### Caching is supported too
 
 ```java
-// arguments are the http client, the directory to store cache files, and the size of the cache in bytes
+// arguments are the http client, the directory to store cache files,
+// and the size of the cache in bytes
 ResponseCacheMiddleware.addCache(AsyncHttpClient.getDefaultInstance(),
                                   getFileStreamPath("asynccache"),
                                   1024 * 1024 * 10);