Add explanation of how the project works

Author: BrunoSilvaAndrade

README.md

@@ -1,2 +1,90 @@
 # python-json-config-parser
 Project created to given the possibility of create dynamics Json config files and use that using oriented object paradigm
+
+
+HOW IT WORKS
+---------------------------
+The Class Config takes two arguments, The first is a Schema(https://github.com/keleshev/schema) to secure the model of config, 
+the second is the str path of json config file.
+If the second argument didn't take, the default value('./config.json') is used when you call Config Class trying find this file in the same dir file where you call this Class.
+
+For example:
+
+The model file.
+```
+SCHEMA_CONFIG = {
+    "core":{
+        "logging":{
+            "format": And(Use(str), lambda string: len(string) > 0),
+            "datefmt": And(Use(str), lambda string: len(string) > 0)
+        },
+        "allowed_clients":[
+            {
+                "ip":str, # <- Here you can use regex to valid the ip format
+                "timeout":int
+            }
+        ]
+    }
+}
+
+```
+
+The config.json file
+```
+{
+    "core":{
+        "logging":{
+            "format":"[%(asctime)s][%(levelname)s]: %(message)s",
+            "datefmt": "%d-%b-%y %H:%M:%S"
+        },
+        "allowed_clients":[
+            {
+                "ip":"192.168.0.10",
+                "timeout":60
+            },
+            {
+                "ip":"192.168.0.11",
+                "timeout":100
+            }
+        ]
+    }
+}
+```
+
+The istance of Config Class:
+```
+from jsonconfigparser import Config, ConfigException
+import logging
+
+try:
+    config = Config(SCHEMA_CONFIG) # <- Here I'm using that SCHEMA_CONFIG we had declared, and the dir file default value is being used
+except ConfigException as e:
+    print(e)
+    exit()
+
+#to access your config you need just:
+logging.getLogger(__name__)
+logging.basicConfig(format=config.core.logging.format, datefmt=config.core.logging.datefmt, level=20)# look this, at this point I'm already using the config variable
+
+#the list of object example:
+
+for client in config.core.allowed_clients:
+    print(client.ip)
+    print(client.timeout)
+
+```
+
+After of create the fist obj you don't need to pass the args again, you can instance of Config in other files of your project
+just calling the Config without args like that:
+
+```
+from jsonconfigparser import Config, ConfigException
+
+config = Config() #At this point you already have the configuration properties in your config object
+```
+
+
+CONTRIBUTE
+----------
+
+Fork https://github.com/BrunoSilvaAndrade/python-json-config-parser/ , create commit and pull request to ``develop``.