Tutorial should be updated

[RichardKelley]

Once issues #3 and #4 are done, the intro tutorial will be completely out of date, and will need to be updated.

TODOs:

• Update the tutorial to explain HLFM. (Update tutorial to explain HFLM #17)
• Update the ASR model used in the tutorial to get faster interaction between the human and the program. (Update ASR model in tutorial #18)
• Update the TTS model used in the tutorial to get faster interaction between the human and the program. (Update TTS model in tutorial #19)