Chromebit language issue

[iamnickvolpe]

Hi there. I found an issue when trying to use this library with my Asus Chromebit. Even when I set the language to "en" or "en-US" in the initialize function, the Chromebit would still speak German. It looks like it's probably related to this issue (http://stackoverflow.com/questions/28219465/is-chrome-os-german-the-correct-default-voice-on-chrome-os)

I ended up forking the library and hardcoding msg.lang to be "en" and that seemed to fix it. I'm not sure how you might fix that in the library to account for the variability.