[docs/item_pipeline] process_item returning Deferred docs
[docs/item_pipeline] process_item returning Deferred docs

* quote url
* use hash of url as filename

shaform/scrapy,finfish/scrapy,finfish/scrapy,taito/scrapy,redapple/scrapy,Parlin-Galanodel/scrapy,arush0311/scrapy,kmike/scrapy,wujuguang/scrapy,elacuesta/scrapy,wenyu1001/scrapy,elacuesta/scrapy,scrapy/scrapy,eLRuLL/scrapy,Parlin-Galanodel/scrapy,umrashrf/scrapy,wujuguang/scrapy,arush0311/scrapy,foromer4/scrapy,crasker/scrapy,jc0n/scrapy,darkrho/scrapy-scrapy,pawelmhm/scrapy,dangra/scrapy,pawelmhm/scrapy,scrapy/scrapy,w495/scrapy,umrashrf/scrapy,GregoryVigoTorres/scrapy,kmike/scrapy,foromer4/scrapy,starrify/scrapy,rolando/scrapy,ArturGaspar/scrapy,rolando-contrib/scrapy,rolando/scrapy,ssteo/scrapy,finfish/scrapy,ssteo/scrapy,taito/scrapy,dangra/scrapy,pablohoffman/scrapy,wenyu1001/scrapy,elacuesta/scrapy,starrify/scrapy,rootAvish/scrapy,scrapy/scrapy,Parlin-Galanodel/scrapy,pawelmhm/scrapy,dangra/scrapy,eLRuLL/scrapy,kmike/scrapy,arush0311/scrapy,redapple/scrapy,rolando/scrapy,Ryezhang/scrapy,rolando-contrib/scrapy,rootAvish/scrapy,ArturGaspar/scrapy,foromer4/scrapy,jc0n/scrapy,darkrho/scrapy-scrapy,redapple/scrapy,ArturGaspar/scrapy,crasker/scrapy,starrify/scrapy,GregoryVigoTorres/scrapy,pablohoffman/scrapy,GregoryVigoTorres/scrapy,shaform/scrapy,darkrho/scrapy-scrapy,wujuguang/scrapy,Ryezhang/scrapy,rolando-contrib/scrapy,taito/scrapy,crasker/scrapy,shaform/scrapy,umrashrf/scrapy,ssteo/scrapy,w495/scrapy,Ryezhang/scrapy,wenyu1001/scrapy,w495/scrapy,eLRuLL/scrapy,pablohoffman/scrapy,jc0n/scrapy,rootAvish/scrapy