Adding Autocapitalize

Regarding Issue #208

sections/semantics-forms.include

@@ -489,7 +489,7 @@
   <p class="warning">In places that change from e.g. Standard Time to Daylight Saving Time,
   the same time can occur twice in the same day when the clocks are moved backwards.
   An <{input}> element with a <{input/type}> of <code>datetime-local</code> or <code>time</code>
-  cannot differentiate between two identical instances of time. 
+  cannot differentiate between two identical instances of time.
   If this difference matters, applications should allow users to specify which occurence of the duplicated time they mean,
   for example by choosing between "Winter time" and "Summer Time".</p>
 
@@ -3960,7 +3960,7 @@ ldh-str       = let-dig / "-" ; defined in <a>RFC 1034 section 3.5</a>
     <{select}> element and <{input}> elements with the <{input/Number}> state.
 
   </div>
-  
+
   <p class="note">
     See [[#date-time-and-number-formats]] for a discussion of
   the difference between the input format and submission format for date, time, and number form
@@ -5150,7 +5150,7 @@ input { height: 75px; width: 49px; background: #D5CCBB; color: black; }
     <dt>[=Allowed ARIA role attribute values=]:</dt>
     <dd><a attr-value for="aria/role"><code>button</code></a>
     (default - <a><em>do not set</em></a>),
-    <a attr-value for="aria/role"><code>link</code></a>, 
+    <a attr-value for="aria/role"><code>link</code></a>,
     or <a attr-value for="aria/role"><code>radio</code></a>.</dd>
     <dt>[=Allowed ARIA state and property attributes=]:</dt>
     <dd><a>Global aria-* attributes</a></dd>
@@ -6336,6 +6336,33 @@ You cannot submit this form when the field is incorrect.</samp></pre>
 
   </div>
 
+<h6 id="the-autocapitalize-attribute">The <code>autocapitalize</code> attribute</h6>
+
+    The <dfn element-attr for="input"><code>autocapitalize</code></dfn> attribute provides
+    information to the user agent on the text capitalization a user's keyboard should
+    use on text fields.
+
+    It currently provides three different capitalization methods; <code>sentences</code>,
+    <code>words</code>, and <code>characters</code>.
+
+    The <code>autocapitalize</code> attribute is a suggestion. The user must be able alter the
+    text they input.
+
+    <div class="example">
+      Here are examples of text entry fields which uses the <code>autocapitalize</code> attribute:
+
+      <pre highlight="html">
+      &lt;label&gt;Sentence case. The first character after a period will be capitalized.&lt;/label&gt;
+      &lt;input type="text" autocapitalize="sentences"&gt;
+
+      &lt;label&gt;Word Case. This Capitalizes The First Letter Of Every Word&lt;/label&gt;
+      &lt;input type="text" autocapitalize="words"&gt;
+
+      &lt;label&gt;CHARACTER CASE. EVERY CHARACTER IS CAPITALIZED.&lt;/label&gt;
+      &lt;input type="text" autocapitalize="characters"&gt;
+
+    </div>
+
 <h5 id="common-input-element-apis">Common <{input}> element <dfn>APIs</dfn></h5>
 
   <dl class="domintro">