README: Add a section describing the "emoji" key

Shows they emojis outputted by the key and what key sequences each uses.

Move the "Example Usage" section above "Screenshots" because it makes
more sense for it to be next to the emoji key section.

1 files changed, 18 insertions, 1 deletions

diff --git a/README.md b/README.md
index c12316a..c2d3f34 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,21 @@ This layout is intended to make ISO keyboards more comfortable to use for
 Americans (and those who are accustomed to ANSI QWERTY keyboards).
 
 
-## Screenshots
+## The Emoji Key
+ISO keyboards have one more key than ANSI keyboards. QWAZERTY uses this "extra"
+key as a special emoji key. The emojis aren't meant to be used for real, but
+rather as a convenient identifier to rebind the key to any desired function.
+
+Here are the emojis and corresponding key sequences:
+
++--------+----------------------+
+| Output | Key Sequence         |
++--------+----------------------+
+|   🕳   | <Emoji>              |
+|   ⛳   | Shift–<Emoji>        |
+|   🌗   | Option–<Emoji>       |
+|   🌑   | Shift—Option—<Emoji> |
++--------+----------------------+
 
 
 ## Example Usage
@@ -31,6 +45,9 @@ the special emoji key is pressed:
 	nnoremap ⛳ :call RunNearestSpec()
 
 
+## Screenshots
+
+
 ## Install
 Copy either `QWAZERTY-normal enter key.bundle` or `QWAZERTY.bundle` to
 `~/Library/Keyboard Layouts`.