initial commit
changes towards #79 SDK now fully unit tests
towards #84, added sha1,md5 validation, upgraded lookup to use SDK, added auto selection to SDK for node set by file
patch Validate for sha1/md5 to only use hex digits (a-f not a-z)
upgraded to work with php E_STRICT on and upgraded transport handling of exceptions
changes towards #79 SDK now fully unit tests
whitespace / newline fixes / added file_exists sdk fixed sdk tests, added VidcacheServer SDK
added license, readme, composer def, examples