Fixing E302 Errors

Signed-off-by: Jason Myers <jason@jasonamyers.com>

tests/nested_foreign_keys/models.py

@@ -17,6 +17,7 @@ class Event(models.Model):
 class Screening(Event):
     movie = models.ForeignKey(Movie)
 
+
 class ScreeningNullFK(Event):
     movie = models.ForeignKey(Movie, null=True)
 
@@ -24,5 +25,6 @@ class ScreeningNullFK(Event):
 class Package(models.Model):
     screening = models.ForeignKey(Screening, null=True)
 
+
 class PackageNullFK(models.Model):
     screening = models.ForeignKey(ScreeningNullFK, null=True)