Update README.txt
Update README.txt

Fix typo + add the Chirper to list of samples that use NuGet packages.
garbervetsky/orleans,ElanHasson/orleans,Carlm-MS/orleans,dotnet/orleans,Liversage/orleans,NaseUkolyCZ/orleans,yevhen/orleans,rrector/orleans,SoftWar1923/orleans,carlos-sarmiento/orleans,dotnet/orleans,centur/orleans,dariobottazzi/orleans,jkonecki/orleans,rore/orleans,kylemc/orleans,tsibelman/orleans,LoveElectronics/orleans,cato541265/orleans,sergeybykov/orleans,ElanHasson/orleans,jokin/orleans,gigya/orleans,shayhatsor/orleans,veikkoeeva/orleans,xclayl/orleans,dVakulen/orleans,zhangf911/orleans,bstauff/orleans,sebastianburckhardt/orleans,kangkot/orleans,Joshua-Ferguson/orleans,ticup/orleans,xclayl/orleans,galvesribeiro/orleans,Joshua-Ferguson/orleans,Liversage/orleans,gabikliot/orleans,shayhatsor/orleans,shlomiw/orleans,TedDBarr/orleans,tsibelman/orleans,shlomiw/orleans,Liversage/orleans,kowalot/orleans,jdom/orleans,jokin/orleans,jthelin/orleans,bstauff/orleans,yevhen/orleans,carlos-sarmiento/orleans,rore/orleans,brhinescot/orleans,kucheruk/orleans,pherbel/orleans,MikeHardman/orleans,jokin/orleans,jdom/orleans,gabikliot/orleans,LoveElectronics/orleans,ticup/orleans,Carlm-MS/orleans,garbervetsky/orleans,MikeHardman/orleans,gigya/orleans,dVakulen/orleans,hoopsomuah/orleans,brhinescot/orleans,skalpin/orleans,ashkan-saeedi-mazdeh/orleans,amccool/orleans,kucheruk/orleans,pherbel/orleans,kangkot/orleans,ashkan-saeedi-mazdeh/orleans,dVakulen/orleans,rrector/orleans,ibondy/orleans,TedDBarr/orleans,hoopsomuah/orleans,ashkan-saeedi-mazdeh/orleans,dariobottazzi/orleans,sebastianburckhardt/orleans,zhangf911/orleans,skalpin/orleans,ibondy/orleans,NaseUkolyCZ/orleans,jkonecki/orleans,cato541265/orleans,cbredlow/orleans,amccool/orleans,cbredlow/orleans,jason-bragg/orleans,modulexcite/orleans,galvesribeiro/orleans,brhinescot/orleans,kylemc/orleans,modulexcite/orleans,waynemunro/orleans,kowalot/orleans,SoftWar1923/orleans,ReubenBond/orleans,centur/orleans,benjaminpetit/orleans,sergeybykov/orleans,waynemunro/orleans,amccool/orleans