Update functions.sh

[lacostenycoder]

Add some aliases for super fast tab color switching love

[connordelacruz]

Hey @lacostenycoder,

While I'm a big fan of aliases like this (I have a few similar ones in my bashrc), I'm not sure if I want to bake those into the script itself. For one, I don't know how people who use these are using them. Personally, I pretty much exclusively use the base16 shell functionality for my tab colors, and I'd imagine others have their preferred specific colors that they use. Additionally, it's possible that aliases like this could conflict with other commands/personal aliases since they're pretty common words.

That said, I like this idea, and I definitely would like to add a section to the README with examples of defining aliases like these in a bashrc so users can create their own personalized aliases in the same vein.

[connordelacruz]

I've added a section to the README about aliases for quick color switching: https://github.com/connordelacruz/iterm2-tab-color/blob/master/README.md#create-aliases-for-quick-color-switching