TODO

Parser
=================

features
-------------------
. create new parser
. set default option(n)
. set legal options(-n,-c)
. set legal verbose(--help,--man)
. parse the give arguments(['-n','10','files'])
. maximum options
. invalid arguments



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TODO

=============

* we are not testing constructor
-- just going to define data structure of that object
* it's behaviour to set default option , addLegal option, addLegal verbose.
    - setDefaultOption will take option and set to defaultOption in the parsedArguments
    - addLegalOption should take option and add into the legalOptions ( return false for empty option)
    -- addLegalVerbose should take verbose and add into the legalVerboses ( return false for empty verbose )
    - parse will take array of options and return in parsedArguments structure

==== parse function ======
  - loop through the arguments
    - check element is an option ?
      -is that element contains value itself ?
        -separate number and option and put it in parsed arguments
        -if it's not having option, defaultOption as key
      - (if you answer no to above question)
        this element is key next element is value increment the index

    - check element is verbose
        push into verbose
    - if you say no for both two question
      push remaining arguments from that index into arguments