Outdated command-line stability warning

[Charles Daffern]

Hello flashrom people,

I just wanted to bring a small triviality to your attention: currently, 
`flashrom --help' warns the user that the command line interface is due 
to change before v1.0, but we have already passed that version.

It is a very trivial change, but for convenience's sake I will attach a 
patch for `git apply'.