shiritori: store history as kanas

Change-Id: I1b546bfad783122ddd15576a8779afff8f8fb5c5

Author: proppy

functions/shiritori/main.js

@@ -41,7 +41,7 @@ shiritori.loaded.then(() => {
         .then(result => {
           console.log(`${result.word} [${result.kana}]`)
           chain.unshift(input)
-          chain.unshift(result.word)
+          chain.unshift(result.kana)
           rl.prompt()
         })
         .catch(reason => {