doc : update

README.md

@@ -105,6 +105,20 @@ Root URL (localhost:3000/) returns all REST API urls for each table in schema.
 * GET           /api/parentTable/:id/childTable 
 * DELETE   /api/tableName/:id
 
+|-----------|----------------------------------|---------------------------------------------------------
+| HTTP Type |            API URL               | Comments 
+|-----------|----------------------------------|---------------------------------------------------------
+| GET       | /api/tableName                   | Lists rows of table
+| POST      | /api/tableName                   | Create a new row
+| PUT       | /api/tableName                   | Replaces existing row with new row
+| GET       | /api/tableName/:id               | Retrieves a row by primary key
+| PATCH     | /api/tableName/:id               | Updates a row by primary key
+| GET       | /api/tableName/findOne           | Works as list but gets single record matching criteria
+| GET       | /api/tableName/count             | Count number of rows in a table
+| GET       | /api/tableName/:id/exists        | True or false whether a row exists or not
+| DELETE    | /api/parentTable/:id/childTable  | Delete a row by primary key
+|-----------|----------------------------------|---------------------------------------------------------
+
 ## APIs with HOT features
 * GET           /api/tableName/aggregate
 * GET           /api/tableName/groupby :fire::fire: