翻译index目录的前半部分
Merge pull request #1 from shangbo/master

test
简单翻译了目录，有待进一步调整
Merge branch 'master' of https://github.com/BusyPhilosopher/Python-2.7.8-documentation-CN
翻译第一章——简介
细微修正
细微调整
Merge pull request #2 from shangbo/master

modified readme