This PR migrates content from CP Streams Dev Guide.

Here is the top-level page:
![image](https://user-images.githubusercontent.com/11722533/33904945-df9cf804-df31-11e7-93aa-52385961522c.png)

Here is a child page:
![image](https://user-images.githubusercontent.com/11722533/33904976-f2eafabe-df31-11e7-918c-fbf95db0f76b.png)

See related: https://github.com/apache/kafka-site/pull/112

Author: Joel Hamill <joel-hamill@users.noreply.github.com>

Reviewers: Guozhang Wang <wangguoz@gmail.com>

Closes #4252 from joel-hamill/20171122-migrate-cp-dev-guide