whitespace fix

tablib/formats/_json.py

@@ -26,11 +26,11 @@ def export_set(dataset):
 def export_book(databook):
 	"""Returns JSON representation of Databook."""
 	return json.dumps(databook._package())
-	
+
 
 def import_set(dset, in_stream):
 	"""Returns dataset from JSON stream."""
-	
+
 	dset.wipe()
 	dset.dict = json.loads(in_stream)
 
@@ -52,4 +52,4 @@ def detect(stream):
 		json.loads(stream)
 		return True
 	except ValueError:
-		return False
+		return False