added rackspace support for CORS
added CORS headers for rackspace
fixed mime type definition
Update README.md

added rackspace CORS headers info.
Update README.md

markup fix.
it will upload all the files.
Merge branch 'master' of github.com:fountainheadpro/asset_sync
multimime fix
multimime fix
multimime fix
multimime fix
multimime fix
error handling
rebase plus two new features added: warn_on_failure - suppresses failure if one of the files failed to upload. always_upload_all - will always upload all files.
changed mime resolution to always use mime-types
fix for warn_on_failure condition
Merge fountainheadpro master's CORS fix into latest asset_sync.  Ironically the only merge conflict was caused by me sending an update for Rackspace London Auth API