Go implementation of Ruby's string parameterize
Replaces contiguous special characters in a string with a '-' and converts all alphabets to lower case. When there are only special characters in the original string, the result of parameterize is an empty string.
Examples: Parameterize("New York") // "new-york" Parameterize("$#@") // "" Parameterize("$#@1#$%") // "1"