Add specific quantifier method

[deveiant]

Linguistics::EN#quantifier currently returns a non-specific description of the quantity:

irb(main):001:0> "match".quantify( 105 )
    ==> "hundreds of matches"

This is kind of surprising, as I'd expect it to return "105 matches".

#quantify should return the specific quantity, and another method, or a variant of the current method should return the non-specific description.