Fix PEP8 warnings in project template files

scrapy/templates/project/module/items.py.tmpl

@@ -5,6 +5,7 @@
 
 import scrapy
 
+
 class ${ProjectName}Item(scrapy.Item):
     # define the fields for your item here like:
     # name = scrapy.Field()

scrapy/templates/project/module/pipelines.py.tmpl

@@ -3,6 +3,7 @@
 # Don't forget to add your pipeline to the ITEM_PIPELINES setting
 # See: http://doc.scrapy.org/en/latest/topics/item-pipeline.html
 
+
 class ${ProjectName}Pipeline(object):
     def process_item(self, item, spider):
         return item