Improved docs

Author: killme2008

lib/promise.js

@@ -257,8 +257,8 @@
 
   /**
    * Just like AV.Promise.when, but it calls resolveCallbck function
-   * with one results array and calls rejectCallback function as soon as one
-   * of promises rejects.
+   * with one results array and calls rejectCallback function as soon as any one
+   * of the input promises rejects.
    * @see AV.Promise.when
    */
   AV.Promise.all = function(promises) {