Test files shipped in package

[mrginglymus]

The @microsoft/tsdoc package weighs in at a fairly hefty 2.7MB. A fair amount of this may come from tests being included in the distribution.

I'm assuming that, given

tsdoc/tsdoc/.npmignore

Lines 19 to 22 in 2c9082a

	/dist/*.stats.*
	/lib/**/test/
	/lib-*/**/test/
	*.test.js

this is not desired; however, whilst the test files themselves are not shipped the .map, .d.ts, and .d.ts.map files all are. I suspect that the ignore patterns should include **/__tests__?

[mrginglymus]

Appears to be fixed by #378, which hasn't seen much activity...