emoji: make the list an independent doc

during this draft phase, the authoritative document for the ordering of
the emoji needs to be consumable by other languages and as a library.

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

emoji/map_json.go

@@ -0,0 +1,47 @@
+// +build ignore
+
+package main
+
+import (
+	"encoding/json"
+	"log"
+	"os"
+	"text/template"
+)
+
+func main() {
+	input, err := os.Open("map-draft.json")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer input.Close()
+
+	// these are an ordered list, referened by a byte (each byte of a checksum digest)
+	Map := []string{}
+
+	dec := json.NewDecoder(input)
+	if err := dec.Decode(&Map); err != nil {
+		log.Fatal(err)
+	}
+
+	output, err := os.Create("map_gen.go")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer output.Close()
+	if err := mapGoTemp.Execute(output, Map); err != nil {
+		log.Fatal(err)
+	}
+}
+
+var (
+	mapGoText = `// THIS FILE IS GENERATED. DO NOT EDIT.
+
+package emoji
+
+var sumList = []string{ {{- range . }}
+	"{{.}}",{{- end }}
+}
+`
+	mapGoTemp = template.Must(template.New("map.go").Parse(mapGoText))
+)