Update to 1.8.1

Update from 1.8 to 1.8.1

static/less/bootstrap-switch.less

@@ -1,8 +1,8 @@
 /* ============================================================
- * bootstrapSwitch v1.8 by Larentis Mattia @SpiritualGuru
+ * bootstrapSwitch v1.8.1 by Larentis Mattia @SpiritualGuru
  * http://www.larentis.eu/
  *
- * Enhanced for radiobuttons by Stein, Peter @BdMdesigN
+ * and Peter Stein (BdMdesigN)
  * http://www.bdmdesign.org/
  *
  * Project site: