using named params with optional amazon s3 params
using named params with optional amazon s3 params

scrapy/scrapy,eLRuLL/scrapy,eLRuLL/scrapy,eLRuLL/scrapy,pablohoffman/scrapy,dangra/scrapy,starrify/scrapy,scrapy/scrapy,scrapy/scrapy,wujuguang/scrapy,finfish/scrapy,dangra/scrapy,starrify/scrapy,wujuguang/scrapy,starrify/scrapy,pawelmhm/scrapy,pablohoffman/scrapy,finfish/scrapy,finfish/scrapy,elacuesta/scrapy,pawelmhm/scrapy,elacuesta/scrapy,wujuguang/scrapy,pablohoffman/scrapy,dangra/scrapy,elacuesta/scrapy,pawelmhm/scrapy