Automatically set phar.readonly=0

[Firehed]

Rather than forcing users to change their php.ini settings or manually add a CLI flag on every run, set the phar.readonly=0 option in the shebang for box itself.

[kherge]

I like this idea, but I need input from other users. Using the shebang line this way doesn't appear to be supported everywhere.

[glensc]

i propose re-exec itself with php commandline options added instead

[theofidry]

@glensc could you try to implement that on https://github.com/humbug/box? I think that would definitely make it easier to use

[theofidry]

To whom may interest, this has been fixed in https://github.com/humbug/box