Make sure bad file names don't crash Node, and create a nice warning for the user for file names that we know might cause trouble.
Merge pull request #89 from adobe-photoshop/dk/filenames

Make sure bad file names don't crash Node
Actually reject the deferred. Skipping reviews is really not good!
Move convertImage from generator-assets plugin to generator core (now available as generator.savePixmap)
Merge remote-tracking branch 'origin/master' into svg/disable