Added convenience methods for HTTP 201 and 401
Added convenience methods for HTTP 201 and 401

jenalgit/ninja,mallowlabs/ninja,cesarmarinhorj/ninja,momiji/ninja,bihe/ninja,khmarbaise/ninja,StetsiukRoman/ninja,watsonmw/ninja,fizzed/ninja,watsonmw/ninja,bihe/ninja,mallowlabs/ninja,duqiao/ninja,liudianpeng/ninja,jlannoy/ninja,ninjaframework/ninja,raphaelbauer/ninja,jlannoy/ninja,SpiralsSeminaire/ninja,fizzed/ninja,SpiralsSeminaire/ninja,zubaidullo/ninja,StetsiukRoman/ninja,tempbottle/ninja-1,bazi/ninja,khmarbaise/ninja,skyseazcq/ninja-1,fizzed/ninja,liudianpeng/ninja,bihe/ninja,fouzelddin/ninja,kidaa/ninja,ninjaframework/ninja,kidaa/ninja,bazi/ninja,jlannoy/ninja,fizzed/ninja,momiji/ninja,jlannoy/ninja,raphaelbauer/ninja,bazi/ninja,raphaelbauer/ninja,zubaidullo/ninja,jenalgit/ninja,watsonmw/ninja,skyseazcq/ninja-1,cesarmarinhorj/ninja,fouzelddin/ninja,ninjaframework/ninja,tempbottle/ninja-1,mallowlabs/ninja,raphaelbauer/ninja,duqiao/ninja,ninjaframework/ninja