R1:f930fd2e005e

Add an Emoji Typeahead

Summary:
This adds a more complete emoji datasource, with a typeahead and autocomplete. It works by pulling in a raw datasource from EmojiOne (I chose Unicode 8, but they have a Unicode 9 datasource as well) and transforming it for speed/need. If we build more robustness or an actual picker into the Remarkup bar, having the additional keywords, etc, might be important. When Unicode 9 support is more prevalent, we should only need to update the single file.

Tossing up as a proof of…