Fixed Page class bug

It now returns only section nodes under the body tag
Fixed bug

It caused when thwre are no pages
new feathre, the timing property for the keyframe
Merge branch 'dev' of https://github.com/qeexee/Scena.js into dev
Added keyframe_animation#@timeToMillisecond helper method
Added Keyframe#delay and implemented delay and recursive keyframes call.
Refacted the test

Removed div elements in test.html and added to spec files.
Improved a test of KeyframeAnimation with asynchronous cases
Implemented timing-after
Added timing of element animation and highlighting to document
Changed page size policy

Specified in header of the html document.
Modified css
Added auto zoom plugin
Removed debug
Modified Mouse Assignment
Added ElementCarry (turned off on by default)
Fixed compile error
Installes server and removed Makefile
Separated file list from server.rb
Added Rakefile for building