Create tech stack docs (techstack.yml and techstack.md)

[stack-file]

Adding tech stack documentation to allow anyone to easily see what is being used in this repo without digging through config files. Two files are being added: techstack.yml and techstack.md. techstack.yml contains data on all the technologies being used in this repo. techstack.md is a visualization of the YML file and displays the tech stack data in a pretty Markdown file.

💡 Protip: techstack.md contains a comment at the top of the file that the following README snippet (with and without the logos) at the top of the file as a comment:

<--- Readme.md Snippet without images Start --->

Tech Stack

bayshaffer/CodeMirror is built on the following main stack:

• JavaScript – Languages
• Eclipse – Integrated Development Environment
• Puppeteer – Headless Browsers
• Travis CI – Continuous Integration
• rollup – JS Build Tools / JS Task Runners
• Shell – Shells

Full tech stack here

<--- Readme.md Snippet without images End --->

Get the code:

## Tech Stack
bayshaffer/CodeMirror is built on the following main stack:

- [JavaScript](https://developer.mozilla.org/en-US/docs/Web/JavaScript) – Languages
- [Eclipse](https://www.eclipse.org/) – Integrated Development Environment
- [Puppeteer](https://github.com/GoogleChrome/puppeteer) – Headless Browsers
- [Travis CI](http://travis-ci.com/) – Continuous Integration
- [rollup](http://rollupjs.org/) – JS Build Tools / JS Task Runners
- [Shell](https://en.wikipedia.org/wiki/Shell_script) – Shells

Full tech stack [here](/techstack.md)

---

<--- Readme.md Snippet with images Start --->

Tech Stack

bayshaffer/CodeMirror is built on the following main stack:

• JavaScript – Languages
• Eclipse – Integrated Development Environment
• Puppeteer – Headless Browsers
• Travis CI – Continuous Integration
• rollup – JS Build Tools / JS Task Runners
• Shell – Shells

Full tech stack here

<--- Readme.md Snippet with images End --->

Get the code:

## Tech Stack
bayshaffer/CodeMirror is built on the following main stack:

- <img width='25' height='25' src='https://img.stackshare.io/service/1209/javascript.jpeg' alt='JavaScript'/> [JavaScript](https://developer.mozilla.org/en-US/docs/Web/JavaScript) – Languages
- <img width='25' height='25' src='https://img.stackshare.io/service/1446/8cyY6D_m.png' alt='Eclipse'/> [Eclipse](https://www.eclipse.org/) – Integrated Development Environment
- <img width='25' height='25' src='https://img.stackshare.io/service/7553/puppeteer.png' alt='Puppeteer'/> [Puppeteer](https://github.com/GoogleChrome/puppeteer) – Headless Browsers
- <img width='25' height='25' src='https://img.stackshare.io/service/460/Lu6cGu0z_400x400.png' alt='Travis CI'/> [Travis CI](http://travis-ci.com/) – Continuous Integration
- <img width='25' height='25' src='https://img.stackshare.io/service/4423/zE8RTn9E_400x400.jpg' alt='rollup'/> [rollup](http://rollupjs.org/) – JS Build Tools / JS Task Runners
- <img width='25' height='25' src='https://img.stackshare.io/service/4631/default_c2062d40130562bdc836c13dbca02d318205a962.png' alt='Shell'/> [Shell](https://en.wikipedia.org/wiki/Shell_script) – Shells

Full tech stack [here](/techstack.md)