Ref #15 | Begins coding and testing for multisite
Ref #15 | Global support in multisite. Adds caching directory to improve response time during header check
Ref #17 | Now storing image paths in file cache for quicker lookups
Close #17 | S3 header lookup function results can be cached as files or in memcached
Close #15 | Plugin now fully supports multisite
Updates readme to remove coming soon section as features will be on hold until bugfixes can be processed.
Merge pull request #16 from tc-mccarthy/tcS3_issue15

Adds multisite support