moved flask-esales extension to esales module

esales/flask_esales.py

@@ -0,0 +1,15 @@
+from .cluster import Cluster
+
+
+class Esales(object):
+
+    def __init__(self, app=None):
+        self.cluster = Cluster()
+
+        if app:
+            self.init_app(app)
+
+    def init_app(self, app):
+        if not 'ESALES_URL' in app.config:
+            raise Exception('ESALES_URL missing in config')
+        self.cluster.url = app.config.get('ESALES_URL')