add bash script

The bash script is required to properly start the program

price_checker.py

@@ -67,3 +67,5 @@ while not budget.compare_prices(current_price):
     print ('[%s]' % ', '.join(map(str, current_price)))
     result = budget.compare_prices(current_price)
     time.sleep(60)
+else:
+    print (tui.url)

price_checker.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+source bin/activate
+./price_checker.py
+exit 0