Add cask for join.me

Add cask for join.me, a screensharing and online meetings app. Downloads
latest version without a checksum as there are no surfaced URLs for old
versions.
Merge pull request #1059 from benjaminhawkeslewis/join-me

Add cask for join.me
Update Xunlei to 2.0.2.928_Beta
Merge pull request #1060 from xyb/xunlei20

Update Xunlei to 2.0.2.928_Beta
fixing (removing) the checksum for lastpass universal
Merge pull request #1061 from brentley/master

fixing (removing) the checksum for lastpass universal
AirServer 4.7.1
CodeKit 1.8.1
Google App Engine Launcher 1.8.4
Mailplane 3.0.2 (801)
Harvest latest
Merge pull request #1062 from sheerun/feature/harvest

Harvest latest
Geekbench 3.1.2
ImageAlpha 1.3.5
Tor Browser Bundle 2.3.25-13
Remove textual demo
Merge pull request #1064 from sheerun/feature/textual

Remove textual demo
Thunderbird 17.0.9esr
MarsEdit 3.6.2
Pester 1.1b16