feat(template): /avoscloud.com/leancloud.cn/
feat(template): /AVOS Cloud/LeanCloud/, /avoscloud/leancloud/
fix: cht -> chs
feat(post): update company name guide

Related discussion: https://github.com/avoscloud/open/pull/5#discussion-diff-18842834
Merge pull request #5 from avoscloud/feat/leancloud-rebrand

feat(template): /avoscloud.com/leancloud.cn/