add support for disabling parsing of "single star" comments

added an option `singleStar` (which defaults to true) to turn off parsing of single star comments (e.g. /* */).  also added missing `break` in `parseTag` because ocd.
Merge branch 'master' into HEAD

Conflicts:
	lib/dox.js
	test/dox.test.js
Invert `singleStar` option to `skipSingleStar`; Add `--skipSingleStar flag`;