Merge pull request #142 from gredimano/Patch1

Add button customize option value.

Author: yajra

src/Html/Button.php

@@ -142,6 +142,20 @@ public function className($value)
         return $this;
     }
 
+    /**
+     * Set customize option value.
+     *
+     * @param string $value
+     * @return $this
+     * @see https://datatables.net/reference/button/excelHtml5
+     */
+    public function customize($value)
+    {
+        $this->attributes['customize'] = $value;
+
+        return $this;
+    }
+
     /**
      * Append a class name to column.
      *