Update README.md

	PROBLEM STATEMENT

There are problems in almost all hostels regarding attendance. At what time wardens should take attendance? That time should suit to both wardens and students.
Some students want to take rest or food at the time of roll call but they have to wait for attendance.
When wardens start taking attendance manually, it may take more than half an hour.
And during exam time these half and hours every day matters a lot.
To overcome these problems we need automated machine that can take attendence.
•	This machine can be used for hostel management, it will be beneficial for both students and wardens. 
•	Students will be free to give roll call (hostel attendance) any time between 7pm to 9pm.
•	Small machine will be there at hostel gate.
•	They have to enter their roll number on that machine, if verified then machine will ask for thumb print. If both verified they will be done with their roll call. 
•	If students miss their roll call (up to 9pm), their names will be automatically sent to respective hostel warden. Considering their sign outs.
•	After completing their roll call, they cannot go out of the hostel.