More Blade improvements… adds template inheritance.

Signed-off-by: Taylor Otwell <taylorotwell@gmail.com>

laravel/helpers.php

@@ -450,4 +450,15 @@ function render($view, $data = array())
 function render_each($partial, array $data, $iterator, $empty = 'raw|')
 {
 	return Laravel\View::render_each($partial, $data, $iterator, $empty);
+}
+
+/**
+ * Get the string contents of a section.
+ *
+ * @param  string  $section
+ * @return string
+ */
+function yield($section)
+{
+	return Laravel\Section::yield($section);
 }