refactored app structure

app/__init__.py

@@ -0,0 +1,29 @@
+from distutils.command.config import config
+from flask import Flask
+from flask_mail import Mail
+from flask_moment import Moment
+from flask_sqlalchemy import SQLAlchemy
+from config import configuration, DevelopmentConfig, TestingConfig, ProductionConfig
+
+
+
+mail =Mail()
+moment = Moment()
+db = SQLAlchemy()
+
+
+def create_app(config_name):
+    app = Flask(__name__)
+
+    app.config.from_object(configuration[config_name])
+    configuration[config_name].init_app(app)
+
+    mail.init_app(app)
+    moment.init_app(app)
+    db.init_app(app)
+
+    from .main import main as main_blueprint
+    
+    app.register_blueprint(main_blueprint)
+
+    return app