Add tests to insight parser

[lizTheDeveloper]

Create tests for the Insight class in lib/insight.js

• Test the parse method with several fixtures, at least 10 real insights from different areas.
• Ensure the parse method can handle games
• Check that the metadata is all captured, test every field present in the yaml from each of the fixtures.
• Ensure that non-yaml properties like title are properly parsed
• Ensure that practice questions are properly parsed
• Ensure that revision questions are properly parsed
• Ensure that quiz questions are properly parsed
• Ensure that insights with images are properly parsed
• Ensure that links properties are properly parsed as a list, with a type.
• Ensure that the toJSON method can properly create or update an insight from our mongoose models
• Ensure that the render method can reproduce what was parsed, even if there are unsupported yaml fields (but not unsupported sections, yet)

[milesflo]

Working on this now 👍

[milesflo]

Moving Games parsing to a separate file called games.js

[milesflo]

@lizTheDeveloper Got 'em all

[milesflo]

https://github.com/enkidevs/curriculum-tools/tree/tests

[milesflo]

Render returns a properly formatted Insight, but sometimes it is different from the original insight in terms of whitespace...

[milesflo]

I've reworked the render test suite to work off of the AST parser.

Insight object will render, be parsed by the AST parser, and compare the values of the given property.