Issue #415: Added code to access parent directory for fixing import error for core.py

# coding=utf-8

import os

import sys

# Fetching parent directory for importing core.py

current_dir = os.path.dirname(__file__)

parent_dir = os.path.dirname(current_dir)

sys.path.append(parent_dir)

from core import HackingTool

from core import HackingToolsCollection