Fixed the navbar toggle in example templates by changing all the ".btn...

Fixed the navbar toggle in example templates by changing all the ".btn .btn-navbar" to ".navbar-toggle"

carousel.html

@@ -56,7 +56,7 @@ body {
 }
 
 /* Offset the responsive button for proper vertical alignment */
-.navbar .btn-navbar {
+.navbar .navbar-toggle {
   margin-top: 10px;
 }
 
@@ -258,7 +258,7 @@ body {
     <div class="navbar navbar-inverse">
       <div class="navbar-inner">
         <!-- Responsive Navbar Part 1: Button for triggering responsive navbar (not covered in tutorial). Include responsive CSS to utilize. -->
-        <button type="button" class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
+        <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".nav-collapse">
           <span class="icon-bar"></span>
           <span class="icon-bar"></span>
           <span class="icon-bar"></span>

jumbotron.html

@@ -39,7 +39,7 @@ title: Jumbotron template
 
 <div class="navbar navbar-inverse navbar-fixed-top">
   <div class="container">
-    <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
+    <a class="navbar-toggle" data-toggle="collapse" data-target=".nav-collapse">
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>
       <span class="icon-bar"></span>

starter-template.html

@@ -18,7 +18,7 @@ title: Starter template
 <div class="navbar navbar-inverse navbar-fixed-top">
   <div class="navbar-inner">
     <div class="container">
-      <button type="button" class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
+      <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".nav-collapse">
         <span class="icon-bar"></span>
         <span class="icon-bar"></span>
         <span class="icon-bar"></span>

sticky-footer-navbar.html

@@ -70,7 +70,7 @@ title: Sticky footer with navbar template
   <!-- Fixed navbar -->
   <div class="navbar navbar-fixed-top">
     <div class="container">
-      <button type="button" class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
+      <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".nav-collapse">
         <span class="icon-bar"></span>
         <span class="icon-bar"></span>
         <span class="icon-bar"></span>