Removed sample config file to change case of file  name.
Changed case of sample config file name.
Added 'signedIn' method to easily check if there's a signed in Monk ID.
Added phpDocumentor documentation.
Added phpDocumentor configuration file and .gitignore for generated 'doc' directory.
#decodePayload now throws an exception if the payload cannot be decoded. Tightened up parameter type hinting.
Added #verifyConfig method, which is called by #loadConfig, to verify all required values. Removed #setConfig and renamed #getConfig to #config.
Removed #cookiePayload as it didn't encapsulate enough useful logic.
Config path and environment can now be read from envrionment values.
Added autoloading and dev dependencies to composer.json. Ignore 'vendor' directory used by Composer.
Tweaked phpDocumentor documentation and config.