Created curl-rest-api-zh-CN.md the Chinese (Simplified) translation of the curl REST API guide and Basic Web Server Guide

[NickCwh]

Description

Created curl-rest-api-zh-CN.md the Chinese (Simplified) translation of the curl REST API guide. It can be found at the guides/curl-rest-api-zh-CN.md

Fixes #177

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[NickCwh]

Fixes #176, Created a Chinese (Simplified) translation of th basic web server guide.

[devadvance]

Changed included in #195. Thank you for contributing!