Option to disable the key (legend)

[tradiff]

Love the gem! Is there a way to disable the key? It becomes noise after a while once the user has learned the colors and symbols. If there is not currently a way to do this, would you be open to a PR to add this configuration?

[mcmire]

There is not currently a way to disable the key, but yes, I would be open to a PR!

[tradiff]

@mcmire I have the feature added, but I'm not sure where I should add specs for the new behavior. Do you have any suggestions on that? Here's my branch if you're interested in a sneak peek.