Got basic functionality of adding DNS records done for challenge4.
Modified challenge1 and challenge4 script behaviors to output the usage if no options are passed on the command-line.
- Created a helpers.py file to house helper Classes and Functions
- Moved the bcolors function to the helpers.py file
- Created a "raxLogin" class in helpers.py to handle authenticating with the API
- Changed challenge4.py to use the "raxLogin" class from helpers.py