LocalCalendarConversion

　## Inspiration Converting to local calendar, or from local calendar, should be useful. 　## What it does Converting to local calendar, or from local calendar 　## How I built it Pass an argument, is type of DateTime, to activity. And get local calendar's string date value. 　## Challenges I ran into Initial value of custom activity arguments could not be set. 　## Accomplishments that I'm proud of it does not depend on Japanese Calendar Class of .Net framework, and able to be added new era or another local calendar. 　## What I learned I learned basic steps to create custom activity. 　## What's next for Hackathon2018_CalenderConverter Add another option to select output format, for example “平成”, “heisei” or “H”.