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

mapsi/js-data is built on the following main stack:

• JavaScript – Languages
• Babel – JavaScript Compilers
• ESLint – Code Review
• Grunt – JS Build Tools / JS Task Runners
• JSHint – Code Review
• Karma – Browser Testing
• PhantomJS – Headless Browsers
• SinonJS – Javascript Testing Framework
• Webpack – JS Build Tools / JS Task Runners
• Firefox – Web Browser

Full tech stack here

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

Get the code:

## Tech Stack
mapsi/js-data is built on the following main stack:

- [JavaScript](https://developer.mozilla.org/en-US/docs/Web/JavaScript) – Languages
- [Babel](http://babeljs.io/) – JavaScript Compilers
- [ESLint](http://eslint.org/) – Code Review
- [Grunt](http://gruntjs.com/) – JS Build Tools / JS Task Runners
- [JSHint](http://www.jshint.com/about/) – Code Review
- [Karma](http://karma-runner.github.io/) – Browser Testing
- [PhantomJS](https://phantomjs.org/) – Headless Browsers
- [SinonJS](http://sinonjs.org/) – Javascript Testing Framework
- [Webpack](http://webpack.js.org) – JS Build Tools / JS Task Runners
- [Firefox](https://www.mozilla.org/en-US/firefox/) – Web Browser

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

---

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

Tech Stack

mapsi/js-data is built on the following main stack:

• JavaScript – Languages
• Babel – JavaScript Compilers
• ESLint – Code Review
• Grunt – JS Build Tools / JS Task Runners
• JSHint – Code Review
• Karma – Browser Testing
• PhantomJS – Headless Browsers
• SinonJS – Javascript Testing Framework
• Webpack – JS Build Tools / JS Task Runners
• Firefox – Web Browser

Full tech stack here

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

Get the code:

## Tech Stack
mapsi/js-data 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/2739/-1wfGjNw.png' alt='Babel'/> [Babel](http://babeljs.io/) – JavaScript Compilers
- <img width='25' height='25' src='https://img.stackshare.io/service/3337/Q4L7Jncy.jpg' alt='ESLint'/> [ESLint](http://eslint.org/) – Code Review
- <img width='25' height='25' src='https://img.stackshare.io/service/845/falgg2jybmhgk16y62lr.png' alt='Grunt'/> [Grunt](http://gruntjs.com/) – JS Build Tools / JS Task Runners
- <img width='25' height='25' src='https://img.stackshare.io/service/1945/mzh2bRes_400x400.png' alt='JSHint'/> [JSHint](http://www.jshint.com/about/) – Code Review
- <img width='25' height='25' src='https://img.stackshare.io/service/1420/TidYGd6a.png' alt='Karma'/> [Karma](http://karma-runner.github.io/) – Browser Testing
- <img width='25' height='25' src='https://img.stackshare.io/service/1832/phantomjs.png' alt='PhantomJS'/> [PhantomJS](https://phantomjs.org/) – Headless Browsers
- <img width='25' height='25' src='https://img.stackshare.io/service/3509/logo.png' alt='SinonJS'/> [SinonJS](http://sinonjs.org/) – Javascript Testing Framework
- <img width='25' height='25' src='https://img.stackshare.io/service/1682/IMG_4636.PNG' alt='Webpack'/> [Webpack](http://webpack.js.org) – JS Build Tools / JS Task Runners
- <img width='25' height='25' src='https://img.stackshare.io/service/8705/768px-Firefox_Logo__2017.svg.png' alt='Firefox'/> [Firefox](https://www.mozilla.org/en-US/firefox/) – Web Browser

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