def shorten(str)
      cleared_str = clear_string(str, :encoding => 'ASCII').gsub(/\W/," ")
      cleared_str.split(" ").map {|s| s[0..1].capitalize}.join
    end
def shorten(str)
      cleared_str = clear_string(str, :encoding => 'ASCII').gsub(/\W/," ")
      cleared_str.split(" ").map {|s| s[0..1].capitalize}.join
    end
Transforms +str+ to a shortened version:
 strips all non-alphanumeric chars, non-ascii and spaces and joins every word
 first two letters capitalized