Write test.md from scratch

[dishmint]

Forego the use of the 'exhibit of markdown' example markdown page and write one up from scratch. It will be much easier to assess the effectiveness of the parse with succinct examples.

[dishmint]

There should be an example for each parsable token.

• Headings (1~6)
• Italic
• Bold
• Tables
• Inline Code
• Code Block
• LaTex
• unordered items
• ordered items

[dishmint]

Each flavor of markdown should have its own test file.