Minor improvements at the crap helper class (no pun intended)

[flyingluscas]

Description

1. Converting to boolean the return of the method validateAlias, avoiding the ternary condition.
2. Using array_map function to parse the arguments, that way we get rid of the foreach and the $require.

Motivation and context

Since the parseArguments method is mutating an array of arguments, I believe that the array_map function is the perfect solution for this case.

Thanks for making such a cool library :D

[coveralls]

Coverage remained the same at 100.0% when pulling 1b044b0 on flyingluscas:improvement/refactoring-crap-helper into a3f3cb1 on geekish:master.

[coveralls]

Coverage remained the same at 100.0% when pulling 1b044b0 on flyingluscas:improvement/refactoring-crap-helper into a3f3cb1 on geekish:master.

[geekish]

Thanks!