Add User guide

Chunzx · Chunzx · commit f05662492b10 · 2020-09-18T12:49:05.000+08:00
diff --git a/docs/README.md b/docs/README.md
@@ -69,9 +69,12 @@ Example of usage:
 ### Find a task 
 ##### `find TASK_NAME` 
 Find the task whose name starts with `TASK_NAME` or any of its sub-words
+
 Example of usage: 
 
 `find cook curry` will match any task with `cook` or `curry`
 
+`find book` will match any task with `book`
+
 
 
