Fixed config

- config didn't work now it's working properly
- it takes config from envirionment variable FLASK_CONFIG
- if no such variable exists it uses Development config as default

app/__init__.py

@@ -0,0 +1,15 @@
+from flask import Flask
+from flask_sqlalchemy import SQLAlchemy
+import os
+
+app = Flask(__name__)
+
+config_string = os.environ.get("FLASK_CONFIG", "config.DevelopmentConfig")
+app.config.from_object("config.DevelopmentConifg")
+app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///app.db"
+app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False
+
+db = SQLAlchemy(app)
+
+from . import routes
+