Added announcement model to announcement app

widget_jupert/announcements/models.py

 from django.db import models
 
+
 # Create your models here.
+class Announcement(models.Model):
+    announcement_title = models.CharField(max_length=50)
+    announcement_body = models.CharField(max_length=500)
+    pub_date = models.DateTimeField("date published")
+
+    def __str__(self):
+        return self.announcement_title