Update Style Guide.md

Author: jimexist

Style Guide.md

@@ -1,15 +1,23 @@
 # MadaData Code Style Guide
 
-## Frontend
+## Naming
+
+*It is very important to figure out names and make naming exact and consistent*
 
-* [Airbnb Javascript Style Guide](https://github.com/airbnb/javascript)
-* [Airbnb React/JSX Style Guide](https://github.com/airbnb/javascript/tree/master/react)
+- use `logIn`, `logOut`, and `signUp`, and their snake_case accordingly.
+  - do no use `login` unless it is used as a name (but prefer `credential` or `principle`)
+  - do not use `signin` or `signout` or other variations
+- use camelCase for acronyms, like `UserDao` and `graphQlSchema`, not `UserDAO` or `graphQLSchema`
+
+## Frontend
 
+- [Airbnb Javascript Style Guide](https://github.com/airbnb/javascript)
+- [Airbnb React/JSX Style Guide](https://github.com/airbnb/javascript/tree/master/react)
 
 ## Java
 
 Use IntelliJ and http://github.com/Madadata/java-code-styles
 
-## General Rules
+## Other General Rules
 
-* [CS106A](https://web.stanford.edu/class/cs106a/styleguide.shtml)
+- [CS106A](https://web.stanford.edu/class/cs106a/styleguide.shtml)