Updated Build Settings

Updated Build Settings for XCode 4.6.3
Changed target to 10.8
Fixed a studip type mismatch

Changed NSImage to NSData.
Fixing depreciated calls

Wish all file handling was in URLs not this mixed bag.
Added a fast enum to convert url output of an open panel to paths.
Clearing up a string warning

Not quite sure why I used string with string.
update gitignore for xcode 4

Just added xcuserdata
Merge branch 'master' of https://github.com/arauchfuss/Simple-Comic

Conflicts:
	Session/TSSTSessionWindowController.m
	SimpleComicAppDelegate.m
Merge Pull