add shows to the schedule
add shows to the schedule

- "Publishing JavaScript Packages" (#113) will be on 2016-07-20 (cc @jdalton, @boennemann, @thejameskyle)
- "Getting started with web audio" (#111) will be on 2016-07-27 (cc @chrislo, @alemangui, @tencircles)
- "How to be a mentor" (#117) will be on 2016-08-10 (cc @kmcrayton7, @taras, @mainroach, @JedWatson)

You'll receive an email with a link to a Google doc and more
instructions as the date of the show gets closer. Thanks!

javascriptair/site,javascriptair/site,javascriptair/site