Bump package.json version to 1.2.0

A 1.0.0 tag was added 6 months ago, but we never updated package.json.  Bump the current master to 1.2.0 reflecting the API jumps since then.
Bump package.json version to 2.0.0
Merge branch 'master'

Fix package.json versioning

Conflicts:
	package.json
Merge pull request #249 from drewww/socket-facilitator-roundup

Here we go!  Jump ahead to v2.0.0 with socket facilitator, shared youtube control, analytics logging, and more.
Fix farming interstitial handling
Add error log to double-set hangout url
Add fully qualified 'from' to log emails
Specify temporary redirects for sessions
Slow auto-farmer down, and farm toward cap
Add cache buster to session links; fix app reload.

Add a ?nocache=<%= new Date().getTime() %> query arg to links to join
sessions in an effort to ensure old cached redirects are not used.

When the facilitator iframe reloads, it wasn't clearing the
tellParticipants interval, resulting in errors from the stale (leaked)
handler firing on a no-longer-existing iframe.
Add missing `save` calls for sessions

Setting sessions' hangout URLs was not resulting in `save` calls,
potentially leading to "in the wrong hangout" type errors.  Persist
hangout URLs.

Also, refactor the calls for creating new event sessions for clarity,
and clear connectedParticipants from permalink sessions on server
startup.
Add travis config