issue #3451. add multi-resolution article
Merge pull request #5 from cuit-zhaxin/master

issue #3451. add multi-resolution article
issue#3451.add the link to the articles
issue#3451. add one menu article
issue#3451.add one label article
issue#3451.add editbox
issue#3451. add a article about director, scene, layer and sprite
Merge pull request #6 from cuit-zhaxin/master

issue#3451.add the link to the articles
Merge pull request #28 from andyque/master

issue #3451. add multi-resolution article