fix(runner): do not error out if only one spec pattern does not match any files
fix(runner): do not error out if only one spec pattern does not match any files

Previously, the runner would throw an error if any one of the spec patterns did not
match any files. Now it logs a warning in that case, and errors out only if there
are no found files in any spec patterns. Closes #260

gempesaw/protractor,tboyce/protractor,hankduan/protractor,GistIcon/protractor,jcapozzi/protractor,joshmgrant/protractor,alfonso-presa/protractor,spirosikmd/protractor,telefonicaid/protractor,AbraaoAlves/protractor,joshmgrant/protractor,gempesaw/protractor,manoj9788/protractor,telefonicaid/protractor,elgalu/protractor,Jandersolutions/protractor,mgiambalvo/protractor,mgiambalvo/protractor,vnaraper/Protractor-test,mstrutt/protractor,gad2103/protractor,NickTomlin/protractor,stalniy/protractor,rsmith31415/protractor,joshmgrant/protractor,samccone/protractor,fox2081/protractor,hdemon/protractor,GistIcon/protractor,igniteram/protractor,fox2081/protractor,alfonso-presa/protractor,xaka/protractor,NicoPennec/protractor,MSakamaki/protractor,JLLeitschuh/protractor,tboyce/protractor,gad2103/protractor,jlin412/protractor,likaiwalkman/protractor,szikszail/protractor,BernardoSilva/protractor,benaston/protractor,NickTomlin/protractor,christian-bromann/protractor,surfjedi/protractor,eduardomb/protractor,nwolverson/protractor,tiru67gmailcom/protractor,juliemr/protractor,modernfidelity/protractor,chinnaamara/protractor,alecxe/protractor,benaston/protractor,quicksnap/protractor,hsleung95/protractor,cnishina/protractor,manoj9788/protractor,jcapozzi/protractor,hankduan/protractor,sirwalt/protractor,marleitao/protractor,MSakamaki/protractor,jlin412/protractor,onshape/protractor,SpiritIT/protractor,elgalu/protractor,gempesaw/protractor,vliloia/protractor,tiru67gmailcom/protractor,bnicart/protractor,stalniy/protractor,skyFi/protractor,blabno/protractor,fancyhejianyang/protractor-operation,alecxe/protractor,juliemr/protractor,christian-bromann/protractor,mbrukman/protractor,BernardoSilva/protractor,xtrepo/protractor,onshape/protractor,dylanb/protractor,Everworks/protractor,quicksnap/protractor,karthiktv006/protractor,xaka/protractor,paraplexed/protractor,tjabell/protractor,cnishina/protractor,mstrutt/protractor,marleitao/protractor,angular/protractor,jive/protractor,karthiktv006/protractor,marleitao/protractor,eduardomb/protractor,hsleung95/protractor,stalniy/protractor,karthiktv006/protractor,panuhorsmalahti/protractor,jlin412/protractor,igniteram/protractor,AbraaoAlves/protractor,faceleg/protractor,GistIcon/protractor,vliloia/protractor,chinnaamara/protractor,nkhuyu/protractor,donaldpipowitch/protractor,likaiwalkman/protractor,juliemr/protractor,angular/protractor,MSakamaki/protractor,tiru67gmailcom/protractor,hdemon/protractor,nwolverson/protractor,fancyhejianyang/protractor-operation,jcapozzi/protractor,rsmith31415/protractor,donaldpipowitch/protractor,Droogans/protractor,hsleung95/protractor,kenn9j/protractor,surfjedi/protractor,manoj9788/protractor,HichemBenChaaben/protractor,jphustman/protractor,telefonicaid/protractor,faceleg/protractor,likaiwalkman/protractor,samccone/protractor,tboyce/protractor,tjabell/protractor,elgalu/protractor,jphustman/protractor,modernfidelity/protractor,paraplexed/protractor,mgiambalvo/protractor,igniteram/protractor,HichemBenChaaben/protractor,NicoPennec/protractor,kongx73/protractor,AbraaoAlves/protractor,jphustman/protractor,jive/protractor,xaka/protractor,benaston/protractor,nwolverson/protractor,blabno/protractor,JLLeitschuh/protractor,tanbo800/protractor,alfonso-presa/protractor,BernardoSilva/protractor,panuhorsmalahti/protractor,angular/protractor,dylanb/protractor,chinnaamara/protractor,gad2103/protractor,christian-bromann/protractor,dylanb/protractor,mgiambalvo/protractor,mstrutt/protractor,NicoPennec/protractor,sirwalt/protractor,JLLeitschuh/protractor,Droogans/protractor,szikszail/protractor,kenn9j/protractor,sirwalt/protractor,skyFi/protractor,faceleg/protractor,szikszail/protractor,cnishina/protractor,marcysutton/protractor,SpiritIT/protractor,Droogans/protractor,tanbo800/protractor,marcysutton/protractor,NickTomlin/protractor,surfjedi/protractor,vliloia/protractor,sjelin/protractor,donaldpipowitch/protractor,fox2081/protractor,modernfidelity/protractor,jlin412/protractor,sjelin/protractor,hankduan/protractor,onshape/protractor,skyFi/protractor,lmacneil/protractor,juliemr/protractor,eduardomb/protractor,bnicart/protractor,xtrepo/protractor,NickTomlin/protractor,kongx73/protractor,nkhuyu/protractor,sjelin/protractor,tjabell/protractor,paraplexed/protractor,mbrukman/protractor,samccone/protractor,alecxe/protractor,angular/protractor,jive/protractor,onshape/protractor,blabno/protractor,lmacneil/protractor,xaka/protractor,xtrepo/protractor,SpiritIT/protractor,hdemon/protractor,JamesMGreene/meteor-storm,lmacneil/protractor,spirosikmd/protractor,Everworks/protractor,Everworks/protractor,HichemBenChaaben/protractor,kongx73/protractor,sirwalt/protractor,rsmith31415/protractor,vnaraper/Protractor-test,tanbo800/protractor,marleitao/protractor,jcapozzi/protractor,spirosikmd/protractor,vnaraper/Protractor-test,bnicart/protractor,panuhorsmalahti/protractor,cnishina/protractor,nkhuyu/protractor,igniteram/protractor,Jandersolutions/protractor,fancyhejianyang/protractor-operation,mbrukman/protractor,manoj9788/protractor,fancyhejianyang/protractor-operation,marcysutton/protractor,Everworks/protractor,sjelin/protractor