Argument for having episodes in a directory with their respective season name

[AlexIsOK]

This will allow users to download series separated by season names.

Example:

//with --folderBySeason

anime
    Season1
        Episode1 of Season1
        Episode2 of Season1
        Episode3 of Season1
    Season2
        Episode1 of Season2
        Episode2 of Season2
        Episode3 of Season2

//without --folderBySeason
anime
    Episode1 of Season1
    Episode1 of Season2
    Episode2 of Season1
    Episode2 of Season2
    Episode3 of Season1
    Episode3 of Season2

This should not mess with anything, but I will allow edits in case something is wrong.

Edit: I have also included a tool to move anime that already exist to the new folder (for people that are using this tool for automation)

[simplymemes]

Can we use the path lib for any path creation? I believe that windows does not support forward slashes in their paths

[AlexIsOK]

@simplymemes Right, I forgot Windows uses \ instead of /. I'll change this to use path instead of fs.rename()

[AlexIsOK]

May take a bit longer than expected, I needed to make a Windows VM to run this on, but I should have a fix within the next two hours.

Edit: due to the bug listed in #50 I will not be able to test this on my Windows VM. I'll implement the feature when the bug is fixed.