Merge pull request #11 from nvdk/patch-1

fix start script

Author: erikap

start.sh

@@ -1,7 +1,7 @@
-#! /usr/bin/env sh
-set -e
-
-if [ $MODE = "development" ]; then 
+#! /usr/bin/env bash
+set -eu
+if [ ${MODE:-""} == "development" ]; then 
+    if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
     exec python web.py
 else 
     exec gunicorn -k egg:meinheld#gunicorn_worker -c "$GUNICORN_CONF" "$APP_MODULE"