修改更新 guides/getting-started/index.md
修改更新 /guides/getting-started/planning-the-application.md
更新 guides/getting-started/creating-a-static-mockup.md
修改更新 guides/getting-started/obtaining-emberjs-and-dependencies.md
guides/getting-started 与官网同步，更新翻译
Merge pull request #70 from dawndiy/master

guides/getting-started 与官网同步，更新翻译