minor fixes in logic adapters & terminal example

[DarkmatterVale]

Just a couple of minor changes, including:

1. Add additional logic adapters to the terminal example adding functionality
2. Possible bug fix in evaluate_mathematically (not really sure, but this makes sure no bug will ever arise)
3. Sometimes, the time logic adapter would find a statement similar to "what is 100 * 10?" as something it should process. By adding the additional piece of training data, the time adapter does not incorrectly process math statements as often

[gunthercox]

👍 Changes look good.

Also, I'm currently looking into #111. Should have some sort of feedback shortly.

[DarkmatterVale]

Awesome! Thank you!

Also, on a side note, GCI ended today, so I hope to be able to spend some more time working on chatterbot now. Thank you!