for(int i=0; i<users.length; i++){
      FirebaseUser firebaseUser = await FirebaseAuth.instance
        .createUserWithEmailAndPassword(email: users[i]['Email Address'], password: users[i]['Contact Number']);
      await Firestore.instance.document('users/${firebaseUser.uid}').setData({
        'name' : users[i]['Full Name'],
        'college' : users[i]['College or Company(Work) Name'],
        'team' : users[i]['Team Name'],
        'designation' : users[i]['Position in the Club'],
        'id' : firebaseUser.uid,
        'meeting' : null,
        'dp' : null
        'subscription': null
      });
    }