Search for 🤘 returns the string and not the emoji

[morganestes]

When I do a search for an emoji that's defined in gemoji, but not listed in the workflow itself (like :metal:), the 🤘 image appears in Alfred, but doesn't get copied to the clipboard. Instead, just the text of the search gets copied.

[avescodes]

I think there are some extra emojis in the gemoji library that aren't actual emojis, but png hacks. Not sure if there is a way to filter them, though.

[morganestes]

Spent a few minutes looking and I could only think of one way, which is to filter based on the presence of the image in the gemoji directory. My ruby isn't great, but I'll submit a PR with what I have and let you take a look.