Added error handling to web-service example
Added error handling to web-service example

dongooo/express,za-creature/express,hightechweb/express,coreypnorris/express,maraoz/express,nodejs-camp/booklog-linkchen,listepo/express,FernAbby/express,stewartml/express,svnh/express,btleffler/express,isaacs/express,dotnetCarpenter/express,buildsample/express,svnh/express,hdngr/express,blakeembrey/express,gnowoel/express,v10258/express,angelsanz/express,qq645381995/express,ci-test2/express,ci-test2/express,xiaofuzi/express,bercanozcan/express,dongseop/express,youprofit/express,expressjs/express,RanadeepPolavarapu/express,CrazySherman/express,fanzetao/express,philxia/ex-tst-framework,strongloop/express,topaxi/express,shanawarkhan/express,ifraixedes/express,MoraLin/mora-test,andriyl/express,blakeembrey/express,friederbluemle/express,dreamingblackcat/express,juanpastas/express,Eric-Vandenberg/express,svnh/express,auth0/express,shanawarkhan/express,xtidt/express,dafabulousteach/express,lian774739140/express,andrejewski/express,auth0/express,sibura/express,leiqiang75/express,qitianchan/express,MoraLin/mora-test,gnowoel/express,CrazySherman/express,dongseop/express,nodejs-camp/booklog-ausir,lmtdit/express,blainsmith/express,vidyar/express,demohi/express,PUSEN/express,qitianchan/express,LestaD/express,awronka/express,hpcslag/express,juandav/express,ZackBotkin/express,robomc/express,stoskov/express,coreypnorris/express,tjmehta/express,sarvex/express,nodejs-camp/booklog-tonebeta-update,michaeljunlove/express,jenalgit/express,BaggersIO/express,hanqingnan/express,nodejs-camp/booklog-archer,nodejs-camp/booklog-ben,chuym/express,BaggersIO/express,nodejs-camp/booklog-jason,nodejs-camp/booklog-Zak,1amageek/express,qq645381995/express,dongooo/express,yinhe007/express,drzorm/express,evilboss/express,v10258/express,TestingCI/express,soyuka/express,devgeniem/express,brianloveswords/express,swstack/express,abdulhannanali/express,junxiong/express,luxe-eng/valet-express.express,philxia/ex-tst-framework,Haru1990/express,WangCao/express,maraoz/express,sujianping/express,devgeniem/express,tyler-johnson/express,bercanozcan/express,luxe-eng/valet-express.express,microlv/express,neomadara/express,swstack/express,KodkodGates/express,corporateanon/express,pshomov/express,frootloops/express,gdeividas/express,Eric-Vandenberg/express,ericlu88/express,mauricionr/express,devgeniem/express,sibura/express,smcmurray/express,VegeChou/express,jenalgit/express,Jonekee/express,btleffler/express,swarajgiri/express,corporateanon/express,weilixia/express,abdulhannanali/express,LestaD/express,vnglst/express,dongseop/express,fanzetao/express,countdracular/express,emvici/emvici-reqres-tify,simudream/express,thepont/express,stoskov/express,buildsample/express,danielrohers/express,flomotlik/express,Ivanwangcy/express,fakedarren/express,dsupera13/express,kentcdodds/express,rupanjanbaidya/express,caiocutrim/express,ahdinosaur/express,WebStyle/express,samuelcastro/express,nodejs-camp/booklog-mora,dieuly/express,benshiue/booklog-ben,stevemao/express,v10258/express,sujianping/express,vidyar/express,XueQian/express,topaxi/express,pstrike/express,gretac/express,danielrohers/express,VegeChou/express,wesleytodd/express,hpcslag/express,dgofman/express,flomotlik/express,junxiong/express,blainsmith/express,methuz/express,xiaofuzi/express,nodejs-camp/booklog-homa,nodejs-camp/booklog-polo,microlv/express,michaeljunlove/express,stevemao/express,Riokai/express,igarciaes/express,qq645381995/express,hdngr/express,mimaidms/express,jimmykuo/express,chrisinajar/express,1verson/express,stevemao/express,simplyianm/express,TestingCI/express,nodejs-camp/booklog-jollen,wesleytodd/express,dafabulousteach/express,WangCao/express,kubrickology/express,featurist/express,WebStyle/express,1verson/express,ralic/express,adjohnson916/express,PeterWangPo/express,sarvex/express,r14r/fork_express_master,cflynn07/express,ericlu88/express,jenia0jenia/express,kylezhang/express,stoskov/express,nodejs-camp/booklog-ben,vinodhalaharvi/express,srichatala/express,baldurh/express,fakedarren/express,ZackBotkin/express,pathirana/express,grigorkh/express,micha149/express,za-creature/express,Lexine/express,ahdinosaur/express,JulyZhu/express,maraoz/express,soyuka/express,wtony/express,Eric-Vandenberg/express,vinodhalaharvi/express,andrejewski/express,smcmurray/express,Kevnz/express,junxiong/express,drzorm/express,kawanet/express,Flip120/express,abdulhannanali/express,Riokai/express,listepo/express,Riokai/express,nodejs-camp/booklog-ansaga,JulyZhu/express,nodejs-camp/booklog-chle,mikewesthad/express,bjrmatos/express,isaacs/express,nathan818fr/express,weilixia/express,rgrove/express,llwanghong/express,wtony/express,jinghuizhai/express,jenia0jenia/express,methuz/express,dotnetCarpenter/express,countdracular/express,aifeld/express,nodejs-camp/booklog-tonebeta,Ju2ender/express,vnglst/express,caiocutrim/express,strongloop/express,adjohnson916/express,friederbluemle/express,nodejs-camp/booklog-leo,XueQian/express,grigorkh/express,hightechweb/express,nodejs-camp/booklog-leo,philxia/ex-tst-framework,ifraixedes/express,abhi3/express,stewartml/express,vnglst/express,abhi3/express,evilboss/express,hdngr/express,nodejs-camp/booklog-chle,gretac/express,rgrove/express,simplyianm/express,supasate/express,topaxi/express,r14r-work/fork_express_master,PeterWangPo/express,jenalgit/express,hanweifish/express,youprofit/express,jymsy/express,robomc/express,grigorkh/express,lemelon/express,r14r-work/fork_express_master,saisai/express,chrisinajar/express,udhayam/express,vinodhalaharvi/express,rupanjanbaidya/express,saisai/express,BaggersIO/express,nodejs-camp/booklog-s890506,dafabulousteach/express,xtidt/express,nodejs-camp/booklog-polo,fineday32/express,Talkyunyun/express,nodejs-camp/booklog-linkchen,friederbluemle/express,featurist/express,abhi3/express,kylezhang/express,srichatala/express,Matrixbirds/express,buildsample/express,nodejs-camp/booklog-jollen,Matrixbirds/express,RickyDan/express,Faiz7412/express,sarvex/express,WangCao/express,FernAbby/express,stewartml/express,michaeljunlove/express,LestaD/express,benshiue/booklog-ben,HXYNODE/express,nodejs-camp/booklog-homa,heicx/express,expressjs/express,1amageek/express,Flip120/express,Flip120/express,HXYNODE/express,igarciaes/express,micha149/express,blakeembrey/express,nodejs-camp/booklog-mora,jinghuizhai/express,andriyl/express,youprofit/express,nodejs-camp/booklog-chenyou,Lexine/express,wtony/express,featurist/express,chrisinajar/express,vidyar/express,thepont/express,juanpastas/express,llwanghong/express,frootloops/express,pstrike/express,codeforgeek/express,chuym/express,Jonekee/express,gnowoel/express,blairzhang/express,Faiz7412/express,fineday32/express,lemelon/express,supasate/express,hl198181/express,jinghuizhai/express,lmtdit/express,gdeividas/express,smcmurray/express,Faiz7412/express,simudream/express,fuse-mars/express,fakedarren/express,jenia0jenia/express,bercanozcan/express,Ju2ender/express,dotnetCarpenter/express,swarajgiri/express,hanqingnan/express,angelsanz/express,nbeydoon/express,supasate/express,luxe-eng/valet-express.express,elkingtonmcb/express,philxia/ex-tst-framework,kubrickology/express,Ju2ender/express,TestingCI/express,jimmykuo/express,dgofman/express,jymsy/express,Kevnz/express,mikewesthad/express,tyler-johnson/express,mauricionr/express,blairzhang/express,mcanthony/express,hacksparrow/express,kylezhang/express,christopheranderson/express,kentcdodds/express,nodejs-camp/booklog-polo,pathirana/express,KodkodGates/express,dreamingblackcat/express,PUSEN/express,kunalpict/express,demohi/express,nbeydoon/express,lian774739140/express,YR/express,nodejs-camp/booklog-jason,kawanet/express,nodejs-camp/booklog-Zak,evanlucas/express,ZackBotkin/express,blairzhang/express,yinhe007/express,nodejs-camp/booklog-tonebeta-update,fuse-mars/express,hanweifish/express,mimaidms/express,qitianchan/express,neomadara/express,nathan818fr/express,samuelcastro/express,juandav/express,corporateanon/express,codeforgeek/express,listepo/express,nodejs-camp/booklog-ausir,evilboss/express,tianhengzhou/express,hl198181/express,tianhengzhou/express,tjmehta/express,pshomov/express,kunalpict/express,nodejs-camp/booklog-s890506,dsupera13/express,simudream/express,elkingtonmcb/express,nodejs-camp/booklog-archer,r14r/fork_express_master,dreamingblackcat/express,Ivanwangcy/express,YR/express,Haru1990/express,kunalpict/express,heicx/express,lmtdit/express,bjrmatos/express,dieuly/express,coreypnorris/express,nodejs-camp/booklog-ansaga,swarajgiri/express,RanadeepPolavarapu/express,hacksparrow/express,nodejs-camp/booklog-tonebeta,aifeld/express,evanlucas/express,baldurh/express,mcanthony/express,nbeydoon/express,1amageek/express,xiaofuzi/express,cflynn07/express,awronka/express,nodejs-camp/booklog-chenyou,RickyDan/express,KodkodGates/express,Talkyunyun/express,hpcslag/express,XueQian/express,za-creature/express,ralic/express,angelsanz/express,leiqiang75/express,ci-test2/express,udhayam/express,christopheranderson/express