add cors

requirements.txt

@@ -10,6 +10,7 @@ dnspython==1.16.0
 docutils==0.15.2
 eventlet==0.25.1
 Flask==1.1.1
+Flask-Cors==3.0.9
 greenlet==0.4.15
 gunicorn==19.9.0
 h5py==2.8.0

sumstats/server/app.py

@@ -3,6 +3,7 @@
 import logging
 from logging import config
 from flask import Flask, make_response, Response
+from flask_cors import CORS
 from sumstats.utils import register_logger
 from sumstats.utils.properties_handler import properties
 from sumstats.server.error_classes import *
@@ -16,6 +17,7 @@
 
 app = Flask(__name__)
 app.url_map.strict_slashes = False
+cors = CORS(app)
 
 
 @api.errorhandler(APIException)