Added rt-pre attribute to README.md

README.md

@@ -48,6 +48,7 @@ http://plugins.jetbrains.com/plugin/7648
     * ~~rt-require~~ (deprecated, use rt-import)
     * [rt-template](#rt-template)
     * [rt-include](#rt-include)
+    * [rt-pre](#rt-pre)
 * [styles](#styles)
 * [event handlers](#event-handlers)
 
@@ -340,6 +341,34 @@ is equivalent to:
 </div>
 ```
 
+## rt-pre
+
+When using the option `--normalize-html-whitespace` it allows to override the whitespace removal behaviour on a specific tag.
+
+###### Sample:
+given `main.rt`:
+```html
+<span rt-pre>
+    here   repeating   whitespaces   are   preserved
+    even   if  --normalize-html-whitespace   is   on  
+</span>
+<span>    
+    here   repeating   whitespaces   are   removed
+    if  --normalize-html-whitespace   is   on   
+</span>
+```
+
+`rt-pre` is applied automatically on `<pre>` and `<textarea>` tags.
+
+###### Sample:
+given `main.rt`:
+```html
+<pre>
+    here   repeating   whitespaces   are   preserved
+    even   if  --normalize-html-whitespace   is   on  
+</span>
+```
+
 ## style
 React templates allow the settings of styles inline in HTML, optionally returning an object from the evaluation context. By default, style names will be converted from hyphen-style to camelCase-style naming.