minor fixes to scrapy shell docs
minor fixes to scrapy shell docs

* better IPython links;
* MDC link instead of w3schools;
* small formatting fixes;
* show quoted URL in example

olafdietsche/scrapy,hbwzhsh/scrapy,huoxudong125/scrapy,kmike/scrapy,godfreyy/scrapy,wzyuliyang/scrapy,Ryezhang/scrapy,zhangtao11/scrapy,ArturGaspar/scrapy,nguyenhongson03/scrapy,rdowinton/scrapy,jamesblunt/scrapy,wangjun/scrapy,umrashrf/scrapy,TarasRudnyk/scrapy,github-account-because-they-want-it/scrapy,pawelmhm/scrapy,Lucifer-Kim/scrapy,nikgr95/scrapy,cyberplant/scrapy,coderabhishek/scrapy,godfreyy/scrapy,heamon7/scrapy,livepy/scrapy,shaform/scrapy,WilliamKinaan/scrapy,coderabhishek/scrapy,curita/scrapy,johnardavies/scrapy,jeffreyjinfeng/scrapy,profjrr/scrapy,lacrazyboy/scrapy,farhan0581/scrapy,pfctdayelise/scrapy,ssh-odoo/scrapy,fqul/scrapy,legendtkl/scrapy,csalazar/scrapy,Preetwinder/scrapy,sardok/scrapy,TarasRudnyk/scrapy,cleydson/scrapy,redapple/scrapy,Cnfc19932/scrapy,Adai0808/scrapy-1,lacrazyboy/scrapy,Zephor5/scrapy,Allianzcortex/scrapy,pawelmhm/scrapy,URXtech/scrapy,liyy7/scrapy,jdemaeyer/scrapy,johnardavies/scrapy,dgillis/scrapy,ssteo/scrapy,kimimj/scrapy,Chenmxs/scrapy,ylcolala/scrapy,famorted/scrapy,starrify/scrapy,fafaman/scrapy,Geeglee/scrapy,kalessin/scrapy,coderabhishek/scrapy,CENDARI/scrapy,nguyenhongson03/scrapy,Parlin-Galanodel/scrapy,olorz/scrapy,Parlin-Galanodel/scrapy,Ryezhang/scrapy,foromer4/scrapy,Zephor5/scrapy,stenskjaer/scrapy,agreen/scrapy,bmess/scrapy,profjrr/scrapy,Slater-Victoroff/scrapy,ssteo/scrapy,jiezhu2007/scrapy,JacobStevenR/scrapy,eliasdorneles/scrapy,huoxudong125/scrapy,legendtkl/scrapy,carlosp420/scrapy,Djlavoy/scrapy,kazitanvirahsan/scrapy,olorz/scrapy,dangra/scrapy,CodeJuan/scrapy,livepy/scrapy,WilliamKinaan/scrapy,kalessin/scrapy,fafaman/scrapy,yidongliu/scrapy,darkrho/scrapy-scrapy,finfish/scrapy,foromer4/scrapy,fqul/scrapy,crasker/scrapy,cyrixhero/scrapy,rklabs/scrapy,Timeship/scrapy,jc0n/scrapy,smaty1/scrapy,elacuesta/scrapy,joshlk/scrapy,joshlk/scrapy,rolando-contrib/scrapy,OpenWhere/scrapy,kashyap32/scrapy,elacuesta/scrapy,scorphus/scrapy,codebhendi/scrapy,agusc/scrapy,1yvT0s/scrapy,mlyundin/scrapy,Parlin-Galanodel/scrapy,GregoryVigoTorres/scrapy,scorphus/scrapy,zorojean/scrapy,hectoruelo/scrapy,webmakin/scrapy,nowopen/scrapy,Partoo/scrapy,zorojean/scrapy,zjuwangg/scrapy,heamon7/scrapy,dgillis/scrapy,rootAvish/scrapy,haiiiiiyun/scrapy,YeelerG/scrapy,kashyap32/scrapy,hwsyy/scrapy,huoxudong125/scrapy,Timeship/scrapy,dacjames/scrapy,hwsyy/scrapy,arush0311/scrapy,pranjalpatil/scrapy,songfj/scrapy,yidongliu/scrapy,tagatac/scrapy,Partoo/scrapy,umrashrf/scrapy,sigma-random/scrapy,johnardavies/scrapy,agusc/scrapy,scrapy/scrapy,olafdietsche/scrapy,kmike/scrapy,hbwzhsh/scrapy,TarasRudnyk/scrapy,URXtech/scrapy,olorz/scrapy,yusofm/scrapy,github-account-because-they-want-it/scrapy,jc0n/scrapy,stenskjaer/scrapy,1yvT0s/scrapy,jorik041/scrapy,devGregA/scrapy,chekunkov/scrapy,carlosp420/scrapy,raphaelfruneaux/scrapy,1yvT0s/scrapy,w495/scrapy,agreen/scrapy,snowdream1314/scrapy,ramiro/scrapy,dhenyjarasandy/scrapy,raphaelfruneaux/scrapy,tliber/scrapy,taito/scrapy,hansenDise/scrapy,famorted/scrapy,Cnfc19932/scrapy,livepy/scrapy,dhenyjarasandy/scrapy,JacobStevenR/scrapy,Geeglee/scrapy,z-fork/scrapy,bmess/scrapy,godfreyy/scrapy,nfunato/scrapy,irwinlove/scrapy,zorojean/scrapy,hectoruelo/scrapy,farhan0581/scrapy,wzyuliyang/scrapy,jorik041/scrapy,w495/scrapy,nowopen/scrapy,rahulsharma1991/scrapy,pombredanne/scrapy,nikgr95/scrapy,ramiro/scrapy,pranjalpatil/scrapy,fontenele/scrapy,profjrr/scrapy,sigma-random/scrapy,rolando-contrib/scrapy,cleydson/scrapy,yarikoptic/scrapy,Adai0808/scrapy-1,olafdietsche/scrapy,tliber/scrapy,legendtkl/scrapy,kmike/scrapy,dgillis/scrapy,CodeJuan/scrapy,arush0311/scrapy,hyrole/scrapy,mlyundin/scrapy,z-fork/scrapy,cyberplant/scrapy,mlyundin/scrapy,zhangtao11/scrapy,snowdream1314/scrapy,CENDARI/scrapy,kalessin/scrapy,rklabs/scrapy,shaform/scrapy,famorted/scrapy,Bourneer/scrapy,dacjames/scrapy,hansenDise/scrapy,avtoritet/scrapy,elijah513/scrapy,pfctdayelise/scrapy,Zephor5/scrapy,zhangtao11/scrapy,URXtech/scrapy,beni55/scrapy,pranjalpatil/scrapy,jdemaeyer/scrapy,csalazar/scrapy,aivarsk/scrapy,zjuwangg/scrapy,umrashrf/scrapy,Lucifer-Kim/scrapy,jiezhu2007/scrapy,ssteo/scrapy,moraesnicol/scrapy,KublaikhanGeek/scrapy,zackslash/scrapy,Slater-Victoroff/scrapy,starrify/scrapy,scorphus/scrapy,ArturGaspar/scrapy,starrify/scrapy,aivarsk/scrapy,xiao26/scrapy,jeffreyjinfeng/scrapy,YeelerG/scrapy,elacuesta/scrapy,pablohoffman/scrapy,dracony/scrapy,eLRuLL/scrapy,Djlavoy/scrapy,rolando-contrib/scrapy,YeelerG/scrapy,rolando/scrapy,raphaelfruneaux/scrapy,webmakin/scrapy,Lucifer-Kim/scrapy,barraponto/scrapy,beni55/scrapy,beni55/scrapy,shaform/scrapy,wujuguang/scrapy,Partoo/scrapy,github-account-because-they-want-it/scrapy,redapple/scrapy,IvanGavran/scrapy,yarikoptic/scrapy,kazitanvirahsan/scrapy,stenskjaer/scrapy,wenyu1001/scrapy,finfish/scrapy,Preetwinder/scrapy,fontenele/scrapy,fqul/scrapy,ylcolala/scrapy,tntC4stl3/scrapy,elijah513/scrapy,Bourneer/scrapy,Adai0808/scrapy-1,codebhendi/scrapy,Ryezhang/scrapy,xiao26/scrapy,arush0311/scrapy,hectoruelo/scrapy,darkrho/scrapy-scrapy,ashishnerkar1/scrapy,tntC4stl3/scrapy,avtoritet/scrapy,curita/scrapy,nowopen/scrapy,amboxer21/scrapy,lacrazyboy/scrapy,Digenis/scrapy,joshlk/scrapy,fpy171/scrapy,cursesun/scrapy,Slater-Victoroff/scrapy,amboxer21/scrapy,wzyuliyang/scrapy,KublaikhanGeek/scrapy,fpy171/scrapy,rdowinton/scrapy,moraesnicol/scrapy,irwinlove/scrapy,hwsyy/scrapy,codebhendi/scrapy,eLRuLL/scrapy,Timeship/scrapy,aivarsk/scrapy,OpenWhere/scrapy,wenyu1001/scrapy,ENjOyAbLE1991/scrapy,csalazar/scrapy,ramiro/scrapy,devGregA/scrapy,liyy7/scrapy,fontenele/scrapy,Allianzcortex/scrapy,darkrho/scrapy-scrapy,AaronTao1990/scrapy,moraesnicol/scrapy,foromer4/scrapy,pablohoffman/scrapy,WilliamKinaan/scrapy,scrapy/scrapy,rolando/scrapy,smaty1/scrapy,eliasdorneles/scrapy,pombredanne/scrapy,rdowinton/scrapy,w495/scrapy,tagatac/scrapy,rahulsharma1991/scrapy,chekunkov/scrapy,pablohoffman/scrapy,nikgr95/scrapy,yarikoptic/scrapy,nfunato/scrapy,wujuguang/scrapy,yusofm/scrapy,ashishnerkar1/scrapy,snowdream1314/scrapy,dracony/scrapy,kimimj/scrapy,yidongliu/scrapy,devGregA/scrapy,OpenWhere/scrapy,fafaman/scrapy,cursesun/scrapy,tagatac/scrapy,zackslash/scrapy,rklabs/scrapy,jiezhu2007/scrapy,haiiiiiyun/scrapy,irwinlove/scrapy,ylcolala/scrapy,Geeglee/scrapy,cyrixhero/scrapy,hyrole/scrapy,mgedmin/scrapy,barraponto/scrapy,wenyu1001/scrapy,jeffreyjinfeng/scrapy,wangjun/scrapy,dacjames/scrapy,hansenDise/scrapy,nfunato/scrapy,dangra/scrapy,jamesblunt/scrapy,chekunkov/scrapy,GregoryVigoTorres/scrapy,kazitanvirahsan/scrapy,cyrixhero/scrapy,dracony/scrapy,ENjOyAbLE1991/scrapy,agusc/scrapy,tliber/scrapy,bmess/scrapy,Digenis/scrapy,IvanGavran/scrapy,kashyap32/scrapy,scrapy/scrapy,farhan0581/scrapy,Bourneer/scrapy,xiao26/scrapy,Cnfc19932/scrapy,zjuwangg/scrapy,jorik041/scrapy,wujuguang/scrapy,smaty1/scrapy,heamon7/scrapy,JacobStevenR/scrapy,nguyenhongson03/scrapy,hbwzhsh/scrapy,agreen/scrapy,avtoritet/scrapy,Allianzcortex/scrapy,crasker/scrapy,GregoryVigoTorres/scrapy,ssh-odoo/scrapy,KublaikhanGeek/scrapy,rootAvish/scrapy,mgedmin/scrapy,jdemaeyer/scrapy,barraponto/scrapy,dangra/scrapy,mgedmin/scrapy,taito/scrapy,CodeJuan/scrapy,sardok/scrapy,AaronTao1990/scrapy,webmakin/scrapy,jc0n/scrapy,dhenyjarasandy/scrapy,kimimj/scrapy,haiiiiiyun/scrapy,elijah513/scrapy,curita/scrapy,Chenmxs/scrapy,AaronTao1990/scrapy,tntC4stl3/scrapy,songfj/scrapy,CENDARI/scrapy,rolando/scrapy,carlosp420/scrapy,songfj/scrapy,amboxer21/scrapy,Djlavoy/scrapy,z-fork/scrapy,cleydson/scrapy,cursesun/scrapy,gbirke/scrapy,zackslash/scrapy,IvanGavran/scrapy,pawelmhm/scrapy,ENjOyAbLE1991/scrapy,yusofm/scrapy,taito/scrapy,fpy171/scrapy,Chenmxs/scrapy,pfctdayelise/scrapy,rahulsharma1991/scrapy,wangjun/scrapy,ArturGaspar/scrapy,rootAvish/scrapy,cyberplant/scrapy,finfish/scrapy,redapple/scrapy,pombredanne/scrapy,eliasdorneles/scrapy,Digenis/scrapy,ssh-odoo/scrapy,eLRuLL/scrapy,liyy7/scrapy,gbirke/scrapy,crasker/scrapy,hyrole/scrapy,Preetwinder/scrapy