smoke tests

[apaleslimghost]

to avoid thursday's fiasco, we could add some smoke tests that:

• clone an example of a stable app, serverless repo & component (i'm thinking article, myft-emails, and n-ui)
• relative-install the n-gage under test
• cd into each of them and check make install, make build and make run (if appropriate, and we'd need to check it's listening on a port and then kill it with a timeout) work

this would make sure at least that the makefile baseline works. it wouldn't protect against any bootstrap/first-install problems but

[apaleslimghost]

closed by #142