Add info to the README about active C++ port and Ruby bindings
Add info to the README about active C++ port and Ruby bindings

FloatingGuy/zxing,JerryChin/zxing,ren545457803/zxing,TestSmirk/zxing,shixingxing/zxing,Fedhaier/zxing,layeka/zxing,hgl888/zxing,TestSmirk/zxing,menglifei/zxing,liuchaoya/zxing,qianchenglenger/zxing,huopochuan/zxing,meixililu/zxing,finch0219/zxing,keqingyuan/zxing,Luise-li/zxing,zhangyihao/zxing,ale13jo/zxing,Yi-Kun/zxing,cncomer/zxing,kyosho81/zxing,gank0326/zxing,cnbin/zxing,iris-iriswang/zxing,wangdoubleyan/zxing,t123yh/zxing,irwinai/zxing,freakynit/zxing,krishnanMurali/zxing,reidwooten99/zxing,BraveAction/zxing,wanjingyan001/zxing,joni1408/zxing,t123yh/zxing,qianchenglenger/zxing,roudunyy/zxing,liuchaoya/zxing,shwethamallya89/zxing,mayfourth/zxing,tks-dp/zxing,Solvoj/zxing,Solvoj/zxing,cnbin/zxing,Akylas/zxing,loaf/zxing,danielZhang0601/zxing,wangxd1213/zxing,wangdoubleyan/zxing,keqingyuan/zxing,RatanPaul/zxing,kharohiy/zxing,SriramRamesh/zxing,DONIKAN/zxing,Luise-li/zxing,angrilove/zxing,daverix/zxing,huihui4045/zxing,daverix/zxing,cncomer/zxing,DavidLDawes/zxing,liboLiao/zxing,finch0219/zxing,MonkeyZZZZ/Zxing,Akylas/zxing,zzhui1988/zxing,loaf/zxing,ZhernakovMikhail/zxing,YuYongzhi/zxing,ChristingKim/zxing,saif-hmk/zxing,YLBFDEV/zxing,jianwoo/zxing,irfanah/zxing,andyao/zxing,befairyliu/zxing,easycold/zxing,YongHuiLuo/zxing,geeklain/zxing,Kabele/zxing,catalindavid/zxing,daverix/zxing,meixililu/zxing,zhangyihao/zxing,l-dobrev/zxing,MonkeyZZZZ/Zxing,WB-ZZ-TEAM/zxing,catalindavid/zxing,zxing/zxing,manl1100/zxing,BraveAction/zxing,qingsong-xu/zxing,DONIKAN/zxing,10045125/zxing,lijian17/zxing,ForeverLucky/zxing,wangjun/zxing,nickperez1285/zxing,Akylas/zxing,GeorgeMe/zxing,geeklain/zxing,SriramRamesh/zxing,Peter32/zxing,sunil1989/zxing,Kevinsu917/zxing,ptrnov/zxing,huopochuan/zxing,WB-ZZ-TEAM/zxing,freakynit/zxing,mig1098/zxing,roadrunner1987/zxing,sysujzh/zxing,wirthandrel/zxing,eight-pack-abdominals/ZXing,JerryChin/zxing,ikenneth/zxing,krishnanMurali/zxing,kailIII/zxing,lijian17/zxing,slayerlp/zxing,whycode/zxing,huangzl233/zxing,qingsong-xu/zxing,RatanPaul/zxing,wangxd1213/zxing,huihui4045/zxing,1shawn/zxing,erbear/zxing,rustemferreira/zxing-projectx,allenmo/zxing,zxing/zxing,ChanJLee/zxing,hiagodotme/zxing,wangjun/zxing,allenmo/zxing,YongHuiLuo/zxing,graug/zxing,iris-iriswang/zxing,sysujzh/zxing,zilaiyedaren/zxing,yuanhuihui/zxing,OnecloudVideo/zxing,zjcscut/zxing,zilaiyedaren/zxing,JasOXIII/zxing,ptrnov/zxing,geeklain/zxing,huangsongyan/zxing,praveen062/zxing,zzhui1988/zxing,kharohiy/zxing,manl1100/zxing,Akylas/zxing,1shawn/zxing,daverix/zxing,Kevinsu917/zxing,kyosho81/zxing,sitexa/zxing,zonamovil/zxing,GeorgeMe/zxing,GeekHades/zxing,tks-dp/zxing,bestwpw/zxing,zonamovil/zxing,ssakitha/QR-Code-Reader,sitexa/zxing,praveen062/zxing,todotobe1/zxing,irfanah/zxing,JasOXIII/zxing,sunil1989/zxing,daverix/zxing,slayerlp/zxing,todotobe1/zxing,huangzl233/zxing,1yvT0s/zxing,east119/zxing,east119/zxing,yuanhuihui/zxing,ren545457803/zxing,projectocolibri/zxing,ale13jo/zxing,saif-hmk/zxing,mig1098/zxing,wanjingyan001/zxing,nickperez1285/zxing,ChristingKim/zxing,ouyangkongtong/zxing,eight-pack-abdominals/ZXing,tanelihuuskonen/zxing,HiWong/zxing,zjcscut/zxing,shixingxing/zxing,ssakitha/sakisolutions,projectocolibri/zxing,layeka/zxing,Akylas/zxing,fhchina/zxing,irwinai/zxing,roudunyy/zxing,OnecloudVideo/zxing,ForeverLucky/zxing,andyshao/zxing,Yi-Kun/zxing,rustemferreira/zxing-projectx,liboLiao/zxing,angrilove/zxing,joni1408/zxing,andyao/zxing,mayfourth/zxing,FloatingGuy/zxing,eddyb/zxing,GeekHades/zxing,mecury/zxing,menglifei/zxing,DavidLDawes/zxing,YLBFDEV/zxing,graug/zxing,ctoliver/zxing,tanelihuuskonen/zxing,mecury/zxing,ssakitha/QR-Code-Reader,YuYongzhi/zxing,juoni/zxing,hiagodotme/zxing,hgl888/zxing,ssakitha/sakisolutions,befairyliu/zxing,eddyb/zxing,lvbaosong/zxing,kailIII/zxing,whycode/zxing,lvbaosong/zxing,jianwoo/zxing,wirthandrel/zxing,Kabele/zxing,easycold/zxing,andyshao/zxing,bestwpw/zxing,huangsongyan/zxing,l-dobrev/zxing,ikenneth/zxing,ChanJLee/zxing,danielZhang0601/zxing,917386389/zxing,ouyangkongtong/zxing,Peter32/zxing,HiWong/zxing,ZhernakovMikhail/zxing,shwethamallya89/zxing,ctoliver/zxing,erbear/zxing,Akylas/zxing,reidwooten99/zxing,Akylas/zxing,917386389/zxing,juoni/zxing,fhchina/zxing,1yvT0s/zxing,Fedhaier/zxing,roadrunner1987/zxing