move result logging from RequestHandler.js to log.result method in log.js
make commands (updatable). Add custom commands to options config update commandLoader.js and webdriver.js to handle customCommand option
add errorCodes to log.js
update customCommands variable initializer to empty object
code formatting issues
code formatting issues - tabs vs spaces
Merge pull request #57 from claracruz/moveResultLoggingToLogFile

Move result logging to log file
Merge pull request #58 from claracruz/makeCommandsExtendable

Make commands extendable (updateable)