Add server.py with base structure. Update .gitignore.

.gitignore

@@ -1,2 +1,3 @@
 config.py
 __pycache__/
+cache.sqlite

server.py

@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+
+from flask import Flask
+from mapbox import Geocoder
+import sqlite3
+import config
+
+geocoder = Geocoder(access_token=config.mapbox_key)
+app = Flask(__name__)
+cache_db = sqlite3.connect("cache.sqlite")
+
+
+@app.route('/')
+def index():
+    text = ("To get the weather for a location, run curl "
+            "https://sky.webionite.com/location. \n"
+            "Source: https://gitlab.com/ceda_ei/sky\n")
+    return text
+
+
+def main(location, geocoder, cache_db):
+    return
+
+
+app.add_url_rule('/<location>', 'location', lambda location:
+                 main(location, geocoder, cache_db))