add keyboard module

Author: jasonford

src/Keyboard.js

@@ -0,0 +1,23 @@
+let pressedEvents = [];
+
+let pressedKeys = '';
+
+document.body.addEventListener('keypress', function (e) {
+  pressedKeys += e.key;
+  pressedEvents.forEach((pressHandlers)=>{
+    //  if pattern matches press handler
+    pressHandlers.handler(pressedKeys);
+  });
+  pressedKeys = '';
+});
+
+let Keyboard = {
+  onPress(keyPattern, handler) {
+    pressedEvents.push({
+      pattern : keyPattern,
+      handler : handler
+    })
+  }
+}
+
+export default Keyboard;