Fixed Ftp::createFile()
Fixed listing of all files including hidden files for Ftp adapter
Move hidden test info base test class cause it should be true for each
adapter. Fix ftp adapter for pure-ftpd server. Add README paragraph
about FTP.
Added a FileAlreadyExists exception to allow users to either ignore or do whatever they'd want when a file already exists on adapter + Fixed some phpdocs
Fixed exception text duplication
Fixed/Updated specifications related to new FileAlreadyExists exception
Fix bug with ftp adapter and main directory creation. Thanks to @hason
and base on his PR https://github.com/KnpLabs/Gaufrette/pull/128
Remove not used exception
Fix ftp creation dir
Added LazyRackspaceCloudfiles adapter
Created specs and refactored lazy rackspace adapter. Replaces #136