restored default functionality for DB file

re-added line to handle DB file finding in simple use case

Author: dominict

4 DB in Python/SQLite Demo/vinventory.py

@@ -11,7 +11,8 @@
 #import os
 #path_root = os.path.dirname(os.path.abspath(__file__)) #grab the file system path to the current script file
 #database_file_path = str(path_root)+"/myinventory.db" #construct the path to the database file (only necessary if the current working directory is not the same as the folder where this Python file is located.)
-
+#if you uncomment the three lines above, be sure to comment out this next line
+database_file_path = "myinventory.db"
 def create_connection(db_file):
     """ create a database connection to the SQLite database
         specified by the db_file