Began "every" for Underbar. "Every" still fails some tests and needs to be adjusted and finished.

Author: austentalbot

src/underbar.js

@@ -200,6 +200,13 @@ var _ = {};
   // Determine whether all of the elements match a truth test.
   _.every = function(collection, iterator) {
     // TIP: Try re-using reduce() here.
+    return _.reduce(collection, function(soFar, item) {
+      if (soFar) {
+        return iterator(item)===true;
+      } else {
+        return false;
+      }
+    }, true);
   };
 
   // Determine whether any of the elements pass a truth test. If no iterator is