Add reserved word scraper framework.

[jgornick]

For now, the only way to add new words to reservedwordsearch.com is by manually visiting the sources, copying the words, doing some manipulation, and finally creating a platform JSON document.

Most of the sources are links to HTML pages that could easily be parsed. It would be nice to create a framework that would allow users to instead write new scrapers to build the platform documents rather than having to do them by hand.

This could be inspired by the scraper framework used for devdocs:

• https://github.com/Thibaut/devdocs#scraper
• https://github.com/Thibaut/devdocs/wiki/Scraper-Reference

Reference issues #1 for a wrapper around running scrapers.

[jgornick]

For JavaScript/node, may want to check out:

https://github.com/rchipka/node-osmosis
https://github.com/lapwinglabs/x-ray