Update README.md

Author: RTBathula

README.md

@@ -21,11 +21,39 @@ app
    microservices
    helpers
    validations
+config
+databases
 main.go  
   
 ```
+##api
+   api package contains all the REST API routes where validations will be done in validations package with same file name and same function names as in api package. This validations will be done through MIDDLEWARE concept.
+It is simple to take the request,validate,pass params to controllers
 
-
+##controllers
+   api routes will call the controllers where file name and function names are same as api package.
+   This is the main center where function logic will be done. like calling to microservices ,for loops ,connecting third parties etc. 
+   
+##models
+   models are simply table models and functions to query and fetch from database. This layer is simply connected to database and do all functions. It does not have any controller logics. It is simply for take query params from controllers and query database and return response.
+   
+##microservices
+   microservices are for third party services like amazon,sockets,mailchimp, some background cron jobs etc.
+   
+##helpers   
+   helpers are simply utility functions for environment variables, password encryptions,jwt token
+   
+##validations
+   All route validations will be done here as a middleware to routes. so the routes will be CLEAN and SIMPLE.
+   
+##config 
+   config folder will contain keys.jso, push notification certificates file etc.
+   
+##databases   
+   databases will have connection to databases. Can also write functionalitites like indexing etc when server starts.
+   
+##main.go
+main.go is the main file where everything will be connected and starts running server.
 
 #REST Routes
 ##Register User