tutorial: update section about following links, expand examples adding an AuthorSpider to demonstrate further a different crawling arrangement.
tutorial: update section about following links, expand examples
adding an AuthorSpider to demonstrate further a different crawling
arrangement.

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