Update README.md

Author: monkeyapple

README.md

@@ -1,2 +1,17 @@
-# GroupNameGenerator
-WebApp : https://namegenerator-monkeyapple.herokuapp.com/
+# Group Name Generator
+**GroupNameGenerator** is a tool for generating existing English words based on the words you provided.
+
+## Current Version
+V1.0
+
+### V1.0 Functionalities
+* Combine 4 words(up to 8 characters for each) into 1 4-letter existing English words
+
+## How to use
+WebApp Link : https://namegenerator-monkeyapple.herokuapp.com/
+
+## Preview
+![Screenshot](/images/index.png)
+
+## License
+GPL v3 license