README.md in work_timer-0.2.0 vs README.md in work_timer-0.2.1

- old
+ new

@@ -3,10 +3,21 @@
 [![Maintainability](https://api.codeclimate.com/v1/badges/c1aa0d29cfb926decd44/maintainability)](https://codeclimate.com/github/9sako6/work_timer/maintainability)
 
 
 This gem measures the time.
 
-![demo](demo.gif)
+**Default mode:**
+
+work_timer measures the time.
+
+![demo1](figs/demo1.gif)
+
+
+**Recording mode:**
+
+work_timer measures the time and saves it in the log file.
+
+![demo2](figs/demo2.gif)
 
 ## Installation
 
 Add this line to your application's Gemfile:
 