Update README.md

README.md

@@ -29,6 +29,15 @@ positions = atoms.get_scaled_positions()
 # etc ...
 ```
 
+## Operation and display db file 
+```
+# pip install CryDBkit
+
+from CryDBkit import website
+
+website.show('open.db')
+```
+
 ## Contact Information:
 
 Mr. SU Tianhao