updated password request dialog
use case instead of if
don't print so many emptystrings
renamed ask_for_key method to masterkey
seperated ask_noecho method
one line if statements
Revert "use case instead of if"

This reverts commit 2da3ef3a33badba3c2c53f52b50b6f671ca66f71.

Conflicts:
	lib/spm/runner.rb