Update

更新します。
Add shortest path data and codes
Upadate
Added test3.py and modified shortest_path.py

3点の中間点を出すテストコード
Update
Update
Merge branch 'master' of https://github.com/arkB/Get-Mid-Point into arkB-master

Conflicts:
	get_mid_point/placesearch.py
	get_mid_point/shortest_path.py
	tests/test2.py
Delete dupulicated test code.