created new 'welcome' app

roomlist/welcome/admin.py

+from django.contrib import admin
+
+# Register your models here.

roomlist/welcome/models.py

+from django.db import models
+
+# Create your models here.

roomlist/welcome/tests.py

+from django.test import TestCase
+
+# Create your tests here.

roomlist/welcome/views.py

+from django.shortcuts import render
+
+# Create your views here.