update readme for option argument
update parameters in readme
update readme for option argument
update parameters in readme
Merge branch 'option_param' of https://github.com/JonathanPrince/comparray into option_param
update readme for option argument
update parameters in readme
update readme for option argument
update parameters in readme
Merge branch 'option_param' of https://github.com/JonathanPrince/comparray into option_param
add test for valid third argument type
update to check type of 3rd argument
update test
Merge pull request #4 from JonathanPrince/option_param

Option param - add optional 3rd argument