Merge pull request jashkenas#3063 from janaspage/correct-split-infinitives

Correct split infinitives.

Author: jashkenas

index.html

@@ -804,8 +804,8 @@ <h2 id="Events">Backbone.Events</h2>
     <p id="Events-once">
       <b class="header">once</b><code>object.once(event, callback, [context])</code>
       <br />
-      Just like <a href="#Events-on">on</a>, but causes the bound callback to only
-      fire once before being removed. Handy for saying "the next time that X happens, do this".
+      Just like <a href="#Events-on">on</a>, but causes the bound callback to fire
+      only once before being removed. Handy for saying "the next time that X happens, do this".
     </p>
 
     <p id="Events-listenTo">
@@ -843,7 +843,7 @@ <h2 id="Events">Backbone.Events</h2>
       <b class="header">listenToOnce</b><code>object.listenToOnce(other, event, callback)</code>
       <br />
       Just like <a href="#Events-listenTo">listenTo</a>, but causes the bound
-      callback to only fire once before being removed.
+      callback to fire only once before being removed.
     </p>
 
     <p id="Events-catalog">
@@ -2392,7 +2392,7 @@ <h2 id="History">Backbone.history</h2>
 
     <p>
       Because hash-based history in Internet Explorer relies on an
-      <tt>&lt;iframe&gt;</tt>, be sure to only call <tt>start()</tt> after the DOM
+      <tt>&lt;iframe&gt;</tt>, be sure to call <tt>start()</tt> only after the DOM
       is ready.
     </p>