the start of a not very useful cli app for wraith

adds log4r to the gem list,we use this for logging.

creates the basic stubs needed for the bin to "work", although it does
nothing right now.
Proper logging

removes dodgy log outputting from wraith bin to add it correctly to
wraith's main class.

adds logging to the cli class
seperated file
start manager update
cropped crop
lots of updates
updated ruby version
thumbnail
updated folder task
fixed configs
fixed snap
using save dir
removed unless statement
changes
changed back ruby version
Merge pull request #85 from BBC-News/wraithier

Wraithier[WIP]
Merge pull request #80 from BBC-News/zomg-things

Enterprisey