Refactor configuration into separate module

There is a good example of this in the Project Weekend GitHub profile.

See: https://github.com/projectweekend/Falcon-PostgreSQL-API-Seed

config.py

@@ -0,0 +1,5 @@
+import os
+
+# Check if Solr connection information was provided in the environment
+SOLR_SERVER = os.environ.get('SOLR_SERVER', 'http://localhost:8080/solr')
+SOLR_CORE = os.environ.get('SOLR_CORE', 'statistics')