minor release 1.1.2
  * General :
      - Added @license tags to the source files
  * BackoffCaller.php :
      - Add @codeCoverageIgnore tags until the unit tests can be written
  * BackoffExponentialMax.php :
      - Fixed a bug where maximumTime would be ignored if it was passed as a float
  * BackoffMultiplicative.php :
      - Add @codeCoverageIgnore tags until the unit tests can be written
  * LICENSE :
      - Inital commit
  * readme.md :
      - Added an example usage scenario for a backoff algorithm
      - Added code license information
      - Added example code implementing BackoffCaller
      - Cleaned up some example code and made it more efficient