refactor
update readme
dont use firefox -v, unreliable
yargs
Opera beta and developer
--lucky, example output
cleanup readme
fix link
tape test
skip opera tests for appveyor
rm test.only
Merge pull request #9 from vweevers/next

Next
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1.0.0
fix lucky mode calling complete callback multiple times

As reported in #10, when in "lucky" mode, multiple found callbacks
could still be called instead of the first one only
Merge pull request #11 from jakub-g/fix-lucky-mode

fix lucky mode calling complete callback multiple times
add chromium
no assumptions
chromium in registry
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