Test snippets should be compiled by the test suite

[ryantrinkle]

See #3 (comment)

[dfordivam]

Sorry, which test suite are we referring to?
Are we talking about CI?

[ryantrinkle]

@dfordivam I don't think we have one yet! But it would be great if we did, so that we could be reasonably sure that the examples don't get out of date.