Meeting Application created by Shailendra Patel.

[shailpat27]

I have created the meeting application. To persist the data used json files.
Application feature:

1. User registration
2. User login using json web token.
3. Meeting creation, get meeting details, drop a user from a meeting, get all meeting for a user.
   There are two services in my application under ./service directory.
4. AuthService, this service is responsible for storing user information. Reading and writing user information to json file to persist user data.
5. MeetingService, this service is responsible for storing all meeting information, and all meeting of a user to json file to persist meeting data.
   There are two controllers in the application:
6. AuthController, main responsibility is to provide the user registration, login, user validation and jwt token validation.
7. MeetingController, main responsibility is to create meeting, get meeting details, delete meeting, drop a user from a meeting.