SourceTree should be source-tree, not sourcetree

According to https://github.com/phinze/homebrew-cask/issues/365
LogMeIn Ignition
Updated link to work with changes mad in version 0.18.0
Merge pull request #1449 from alexg0/logmein_ignition

Add LogMeIn Ignition for Mac
Merge pull request #1456 from tditlu/fs-uae

Update FS-UAE links
Droplr 3.5.2
add cask for gimp lisanet
Merge pull request #1457 from leonardvandriel/master

Add cask for Gimp-Lisanet @ 2.8.6
iExplorer 3.2.3.0b
SeaMonkey 2.22
Keka 1.0.4
brew cask list, when given args, list installed files

this mimics (and indeed steals code from) homebrew's behavior

refs #1417
Merge pull request #1460 from phinze/list-like-homebrew

brew cask list, when given args, list installed files
Add Img2icns.app.
Merge pull request #1459 from kud/feat.img2icns

Add Img2icns.app.
more robust plist parsing, and better error handling

hdiutil can output DMG agreement information before the output plist
xml, and our plist parser was choking on that text before the xml
started.

so now we scan to the beginning of an xml document before trying to
parse the xml.

also added much more explicit error handling around the plist parsing,
to hopefully catch related and future plist-related errors.

refs #914
Merge pull request #1462 from phinze/smarter-plist-parser

more robust plist parsing, and better error handling
Merge pull request #1339 from MoOx/source-tree-not-sourcetree

SourceTree should be source-tree, not sourcetree
added gridwars
Added Java