Add notice about 3.0 beta
Fix crash condition + invalid image orientation (fix #206)
Add who use it section
Remove outdated motivation section
Sync feature list with 3.0 README
Add "How is SDWebImage better than X?" wiki link
Add Licenses section
Fix typo in license URL
prevent caching of responses in Cache.db
Fix wrong cache policy used (fix #211)
Merge pull request #211 from herrernst/master

Prevent caching of responses in Cache.db
Fix CGBitmapContextCreate errors (fix #204)
Fixing overrelease of UIImage object
Merge pull request #221 from JaviSoto/master

CRASH: Fixing overrelease of UIImage object