Add basic doors level
* Add doors.txt for intro description
Bring back formatting module
* loading level converts level name into .txt to load intro
Clean up temple.py runner code
* Remove display module from temple.py
* Rename intro.txt to foreword.txt
Rename doors to gates
Create level_dict in engine.py to load levels
* Create dummy classes in Levels to deal with first two
Move text files to new folder
* Update to_txt method for new directory
* Remove whitespace in engine.py