Rename SexMachine to GenderDetector

Hi!

I'd like to propose renaming SexMachine to GenderDetector.

Now, I know many people wouldn't consider this the most important topic in the world, but I think that this change is something simple and easy that we Rubyists can do to become a safer, more welcoming place to women software engineers. And I know I'm not the only one that thinks so (https://github.com/bmuller/sexmachine/issues/9)

SexMachine is an overly sexual name, which does not belong in a work environment. This sexualized name can inadvertently cause women to become uncomfortable, and to feel excluded. Naming this gem SexMachine sends a message to sexist men that sexual jokes are allowed, which promotes an unhealthy atmosphere.

I know many people don't realize why some women might feel uncomfortable with the name of this gem. Unfortunately, the society we live in today is polarized around the topic of sexuality, and more importantly, who has the power with respect to sexuality. This power dynamic is heavily skewed toward male favor. Men can joke about their sexuality and this is a source of manliness and pride. A woman cannot feel free to discuss similar topics without a very real threat of being called a sexual pejorative. 

Even though this rename removes a fun play on words, I'd like to think that providing a community that shows it is welcoming to women more than outweighs this loss.

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For the people who think SexMachine is not sexist language:

Sex Machine, like many words in the English language, has many meanings.

As a noun it is a machine typically (but not exclusively) created to simulate penetrative sexual intercourse. This machine usually has some sort of dildo attached.

A common slang meaning is that of a person (usually a man) that can continue having sex for an indeterminate amount of time. http://www.urbandictionary.com/define.php?term=sex+machine.

This use of the word is what James Brown was using in his famous song "Get Up (I Feel Like Being a) Sex Machine" http://en.wikipedia.org/wiki/Get_Up_(I_Feel_Like_Being_a)_Sex_Machine.

When referring to a man as a Sex Machine, this is usually a good thing. When referring to a woman as a Sex Machine, I'd claim that in the vast majority of cases this would not be a positive reference. This plays out in the Urban Dictionary definitions of the phrase.

In any case, most of these meanings of the word continue to highlight the current dichotomy between the highly esteemed sexual prowess of a man and the dismissal and objectification of women who express their sexuality.