updated startTone steps, clarifying the gap param (related to #88)
Merge pull request #107 from zolkis/gh-pages

updated sendTones steps
added event table for ConferenceCall, completing #69
updated steps for join() method, fixing #91
renamed join() to createConference, completing #91, see also #87
Merge pull request #108 from zolkis/gh-pages

ConferenceCall related updates