* fixed an error of calendar.
 * updated doc.js.
 * updated transition.js.
 * updated modal.js to bootstrap 3.0.
 * ajusted code format.
 * updated modal.trigger.js: added oncemodal.
 * enhanced modal.js.
 * renamed 'oncemodal' to modalTrigger.
 * remove 'code' margin within tag 'pre'.
 * positon can be set by trigger in realtime for modal.
 * ajusted style of modal.
 * updated modal.trigger.
 * updated document.
 * updated documents.