Use the expect operator where possible since it is more efficient.

Conflicts:
	You-NLP/query_parser.cpp
Use more expects when using explicit commands.

Conflicts:
	You-NLP/query_parser.cpp
Test for #287 by demonstrating that the show command can be used without a space delimiter.
Merge pull request #293 from lowjoel/use-expect-where-possible

Use the expect operator where possible since it is more efficient.