add robots.txt to endpoint

[lockefox]

In an effort to subdue crawlers, add a robots.txt to publicAPI/static

http://stackoverflow.com/questions/14048779/with-flask-how-can-i-serve-robots-txt-and-sitemap-xml-as-static-files

Notes:

• need to add publicAPI/static to MANIFEST.in
• may need to add publicAPI/static/* to package_data in setup.py
• Any new endpoints will need to add tests to test_crest_endpoint.py

[lockefox]

Bots to block

How can I block MJ12bot?

MJ12bot adheres to the robots.txt standard. If you want the bot to prevent website from being crawled then add the following text to your robots.txt:

User-agent: MJ12bot
Disallow: /
Please do not block our bot via IP in htaccess - we do not use any consecutive IP blocks as we are a community based distributed crawler. Please always make sure the bot can actually retrieve robots.txt itself. If it can't then it will assume that it is okay to crawl your site.

If you have reason to believe that MJ12bot did NOT obey your robots.txt commands, then please let us know via email: bot@majestic12.co.uk. Please provide URL to your website and log entries showing bot trying to retrieve pages that it was not supposed to.

Testing/validating robots.txt functionality
https://docs.python.org/3.5/library/urllib.robotparser.html

[kanelarrete]

To keep multiple bots from crawling the site, you can follow this.
`This example tells all robots to stay out of a website:

User-agent: *
Disallow: /

This is taken from https://en.wikipedia.org/wiki/Robots_exclusion_standard#About_the_standard

To protect the API only, it could be setup as
User-agent: * Disallow: /CREST/

[lockefox]

Robots.txt functionality should also be added to ProsperCookiecutter for Flask projects