Allow removal of HTTP headers by passing nil
Allow removal of HTTP headers by passing nil

Meihualu/RestKit,SuPair/RestKit,percysnoodle/RestKit,moneytree/RestKit,0dayZh/RestKit,wyzzarz/RestKit,canaydogan/RestKit,qingsong-xu/RestKit,samanalysis/RestKit,ipmobiletech/RestKit,apontador/RestKit,lmirosevic/RestKit,coderChrisLee/RestKit,Meihualu/RestKit,coderChrisLee/RestKit,wireitcollege/RestKit,gank0326/restkit,damiannz/RestKit,aleufms/RestKit,coderChrisLee/RestKit,RyanCodes/RestKit,moneytree/RestKit,HarrisLee/RestKit,nphkh/RestKit,lucasecf/RestKit,goldstar/RestKit,imton/RestKit,ppierson/RestKit,caamorales/RestKit,naqi/RestKit,LiuShulong/RestKit,kevmeyer/RestKit,jrtaal/RestKit,mumer92/RestKit,Juraldinio/RestKit,0x73/RestKit,DejaMi/RestKit,zilaiyedaren/RestKit,money-alex2006hw/RestKit,zjh171/RestKit,imton/RestKit,apontador/RestKit,sachin-khard/NucRestKit,adozenlines/RestKit,nett55/RestKit,oligriffiths/RestKit,erichedstrom/RestKit,jrtaal/RestKit,ppierson/RestKit,wuxsoft/RestKit,Flutterbee/RestKit,Flutterbee/RestKit,caamorales/RestKit,RestKit/RestKit,gank0326/restkit,sachin-khard/NucleusRestKit,QLGu/RestKit,Livestream/RestKit,braindata/RestKit,common2015/RestKit,loverbabyz/RestKit,Papercloud/RestKit,loverbabyz/RestKit,kevmeyer/RestKit,ipmobiletech/RestKit,Papercloud/RestKit,DejaMi/RestKit,cryptojuice/RestKit,gauravstomar/RestKit,ipmobiletech/RestKit,Juraldinio/RestKit,agworld/RestKit,oligriffiths/RestKit,djz-code/RestKit,wyzzarz/RestKit,ppierson/RestKit,justinyaoqi/RestKit,hejunbinlan/RestKit,fhchina/RestKit,TheFarm/RestKit,lmirosevic/RestKit,nett55/RestKit,common2015/RestKit,pat2man/RestKit,sachin-khard/NucRestKit,justinyaoqi/RestKit,antondarki/RestKit,Gaantz/RestKit,lmirosevic/RestKit,0x73/RestKit,ForrestAlfred/RestKit,common2015/RestKit,taptaptap/RestKit,Meihualu/RestKit,braindata/RestKit-1,hejunbinlan/RestKit,taptaptap/RestKit,SuPair/RestKit,justinyaoqi/RestKit,vilinskiy-playdayteam/RestKit,wangjiangwen/RestKit,Meihualu/RestKit,wangjiangwen/RestKit,djz-code/RestKit,wireitcollege/RestKit,nphkh/RestKit,Livestream/RestKit,CodewareTechnology/RestKit,wangjiangwen/RestKit,lmirosevic/RestKit,coderChrisLee/RestKit,hejunbinlan/RestKit,jonesgithub/RestKit,coderChrisLee/RestKit,TheFarm/RestKit,oye-lionel/GithubTest,gank0326/restkit,margarina/RestKit-latest,nett55/RestKit,0x73/RestKit,mavericksunny/RestKit,zilaiyedaren/RestKit,qingsong-xu/RestKit,CodewareTechnology/RestKit,0dayZh/RestKit,nphkh/RestKit,naqi/RestKit,cryptojuice/RestKit,mumer92/RestKit,zilaiyedaren/RestKit,Gaantz/RestKit,lucasecf/RestKit,braindata/RestKit,sachin-khard/NucRestKit,moneytree/RestKit,youssman/RestKit,Bogon/RestKit,PonderProducts/RestKit,baumatron/RestKit,justinyaoqi/RestKit,HarrisLee/RestKit,0dayZh/RestKit,gauravstomar/RestKit,wangjiangwen/RestKit,aleufms/RestKit,jonesgithub/RestKit,damiannz/RestKit,youssman/RestKit,PonderProducts/RestKit,StasanTelnov/RestKit,baumatron/RestKit,RestKit/RestKit,ForrestAlfred/RestKit,cfis/RestKit,kevmeyer/RestKit,cnbin/RestKit,percysnoodle/RestKit,zjh171/RestKit,lucasecf/RestKit,Livestream/RestKit,fhchina/RestKit,QLGu/RestKit,fhchina/RestKit,caamorales/RestKit,aleufms/RestKit,RestKit/RestKit,damiannz/RestKit,fhchina/RestKit,Papercloud/RestKit,margarina/RestKit-latest,sandyway/RestKit,qingsong-xu/RestKit,adozenlines/RestKit,sachin-khard/NucleusRestKit,Gaantz/RestKit,Livestream/RestKit,percysnoodle/RestKit,hejunbinlan/RestKit,erichedstrom/RestKit,mavericksunny/RestKit,antondarki/RestKit,sachin-khard/NucleusRestKit,goldstar/RestKit,erichedstrom/RestKit,LiuShulong/RestKit,dx285/RestKit,damiannz/RestKit,caamorales/RestKit,vilinskiy-playdayteam/RestKit,sachin-khard/NucRestKit,wireitcollege/RestKit,pbogdanv/RestKit,pbogdanv/RestKit,ChinaPicture/RestKit,wireitcollege/RestKit,aleufms/RestKit,money-alex2006hw/RestKit,cryptojuice/RestKit,loverbabyz/RestKit,zjh171/RestKit,gauravstomar/RestKit,nphkh/RestKit,oye-lionel/GithubTest,ForrestAlfred/RestKit,PonderProducts/RestKit,CodewareTechnology/RestKit,wireitcollege/RestKit,sandyway/RestKit,wuxsoft/RestKit,timbodeit/RestKit,ppierson/RestKit,Flutterbee/RestKit,cnbin/RestKit,Gaantz/RestKit,sachin-khard/NucRestKit,LiuShulong/RestKit,mumer92/RestKit,mberube09/RestKit,antondarki/RestKit,RyanCodes/RestKit,Papercloud/RestKit,samanalysis/RestKit,ForrestAlfred/RestKit,zhenlove/RestKit,Flutterbee/RestKit,sachin-khard/NucleusRestKit,mumer92/RestKit,canaydogan/RestKit,mberube09/RestKit,fedegasp/RestKit,gank0326/restkit,aleufms/RestKit,Gaantz/RestKit,samanalysis/RestKit,nett55/RestKit,baumatron/RestKit,Bogon/RestKit,baumatron/RestKit,0dayZh/RestKit,pat2man/RestKit,margarina/RestKit-latest,pat2man/RestKit,qingsong-xu/RestKit,samkrishna/RestKit,damiannz/RestKit,samkrishna/RestKit,zhenlove/RestKit,antondarki/RestKit,timbodeit/RestKit,ChinaPicture/RestKit,QLGu/RestKit,cnbin/RestKit,Bogon/RestKit,wuxsoft/RestKit,moneytree/RestKit,percysnoodle/RestKit,zilaiyedaren/RestKit,hanangellove/RestKit,timbodeit/RestKit,zhenlove/RestKit,caamorales/RestKit,ChinaPicture/RestKit,zilaiyedaren/RestKit,dx285/RestKit,canaydogan/RestKit,canaydogan/RestKit,cfis/RestKit,LiuShulong/RestKit,hanangellove/RestKit,pat2man/RestKit,DejaMi/RestKit,gank0326/restkit,dx285/RestKit,djz-code/RestKit,QLGu/RestKit,TheFarm/RestKit,jrtaal/RestKit,antondarki/RestKit,SuPair/RestKit,LiuShulong/RestKit,money-alex2006hw/RestKit,jrtaal/RestKit,vilinskiy-playdayteam/RestKit,timbodeit/RestKit,DejaMi/RestKit,REXLabsInc/RestKit,agworld/RestKit,samanalysis/RestKit,agworld/RestKit,naqi/RestKit,hanangellove/RestKit,nett55/RestKit,naqi/RestKit,vilinskiy-playdayteam/RestKit,REXLabsInc/RestKit,oligriffiths/RestKit,0x73/RestKit,adozenlines/RestKit,braindata/RestKit-1,youssman/RestKit,PonderProducts/RestKit,cryptojuice/RestKit,loverbabyz/RestKit,oye-lionel/GithubTest,braindata/RestKit,cfis/RestKit,kevmeyer/RestKit,taptaptap/RestKit,gauravstomar/RestKit,pbogdanv/RestKit,CodewareTechnology/RestKit,QLGu/RestKit,loverbabyz/RestKit,djz-code/RestKit,fedegasp/RestKit,StasanTelnov/RestKit,kevmeyer/RestKit,zhenlove/RestKit,wuxsoft/RestKit,pat2man/RestKit,cryptojuice/RestKit,HarrisLee/RestKit,wyzzarz/RestKit,Meihualu/RestKit,braindata/RestKit,nphkh/RestKit,gauravstomar/RestKit,dx285/RestKit,hanangellove/RestKit,apontador/RestKit,agworld/RestKit,oligriffiths/RestKit,goldstar/RestKit,Juraldinio/RestKit,common2015/RestKit,mavericksunny/RestKit,samkrishna/RestKit,hejunbinlan/RestKit,ForrestAlfred/RestKit,apontador/RestKit,timbodeit/RestKit,cnbin/RestKit,oye-lionel/GithubTest,mberube09/RestKit,imton/RestKit,common2015/RestKit,mavericksunny/RestKit,StasanTelnov/RestKit,youssman/RestKit,baumatron/RestKit,Juraldinio/RestKit,ChinaPicture/RestKit,ChinaPicture/RestKit,imton/RestKit,zjh171/RestKit,lmirosevic/RestKit,mumer92/RestKit,money-alex2006hw/RestKit,goldstar/RestKit,pbogdanv/RestKit,sachin-khard/NucleusRestKit,HarrisLee/RestKit,apontador/RestKit,canaydogan/RestKit,fedegasp/RestKit,HarrisLee/RestKit,ipmobiletech/RestKit,oligriffiths/RestKit,braindata/RestKit-1,dx285/RestKit,jonesgithub/RestKit,Bogon/RestKit,fedegasp/RestKit,youssman/RestKit,adozenlines/RestKit,fhchina/RestKit,DejaMi/RestKit,ipmobiletech/RestKit,sandyway/RestKit,0x73/RestKit,sandyway/RestKit,justinyaoqi/RestKit,zhenlove/RestKit,jonesgithub/RestKit,oye-lionel/GithubTest,braindata/RestKit-1,cnbin/RestKit,moneytree/RestKit,money-alex2006hw/RestKit,lucasecf/RestKit,wuxsoft/RestKit,REXLabsInc/RestKit,RyanCodes/RestKit,Papercloud/RestKit,SuPair/RestKit,pbogdanv/RestKit,ppierson/RestKit,jonesgithub/RestKit,mberube09/RestKit,Bogon/RestKit,RyanCodes/RestKit,taptaptap/RestKit,wangjiangwen/RestKit,braindata/RestKit-1,RyanCodes/RestKit,imton/RestKit,Juraldinio/RestKit,adozenlines/RestKit,sandyway/RestKit,qingsong-xu/RestKit,hanangellove/RestKit,jrtaal/RestKit,REXLabsInc/RestKit,fedegasp/RestKit,samanalysis/RestKit,wyzzarz/RestKit,zjh171/RestKit,margarina/RestKit-latest,CodewareTechnology/RestKit,SuPair/RestKit,lucasecf/RestKit