Command line interfaces can significantly improve development processes through the use of scripting. Zowe CLI is an open source tool that provides remote interaction with the mainframe and as an extensible technology, mainframe development products.

The Zowe CLI enables developers and DevOps engineers to control, script and develop on the mainframe like any other cloud platform and allows them to make use of familiar, industry-standard, open-source tooling. This helps address the skills gap and onboard COBOL developers by making mainframe development more attractive and accessible.

This PR address issue #31 by adding:

• Chapter 3. Zowe CLI and Zowe CLI Plug-ins
  • Explains what a CLI is and why you would use it, how to use Zowe CLI interactively, how to abstract CLI commands into useful scripts, and how Zowe CLI enables the use of familiar open source tooling while developing COBOL applications on the mainframe.
• Chapter 5. Installation of Zowe CLI and Plug-ins
  • Covers all aspects of the download and installation of Zowe CLI and Zowe CLI plug-ins.

This PR also addresses issues #15 and #24.

I modified both the word doc and the PDF. The word doc has track changes enabled to help in the review process.

Thanks to @jellypuno for her review!