Add steps for contributing to README
Add steps for contributing to README

thieman/compose,ChrisChinchilla/compose,docker-zh/docker.github.io,jrabbit/compose,anweiss/docker.github.io,abesto/fig,feelobot/compose,LuisBosquez/docker.github.io,bobphill/compose,mdaue/compose,noironetworks/compose,charleswhchan/compose,twitherspoon/compose,Dakno/compose,screwgoth/compose,mindaugasrukas/compose,bdwill/docker.github.io,swoopla/compose,gtrdotmcs/compose,au-phiware/compose,jonaseck2/compose,lmesz/compose,ekristen/compose,docker/docker.github.io,hoogenm/compose,denverdino/denverdino.github.io,tpounds/compose,hypriot/compose,johnstep/docker.github.io,dbdd4us/compose,ain/compose,GM-Alex/compose,hypriot/compose,nerro/compose,dnephin/compose,anweiss/docker.github.io,VinceBarresi/compose,denverdino/docker.github.io,viranch/compose,docker-zh/docker.github.io,bsmr-docker/compose,dilgerma/compose,bfirsh/fig,Yelp/docker-compose,sanscontext/docker.github.io,marcusmartins/compose,mnuessler/compose,JimGalasyn/docker.github.io,thaJeztah/compose,menglingwei/denverdino.github.io,danix800/docker.github.io,joaofnfernandes/docker.github.io,vdemeester/compose,Katlean/fig,menglingwei/denverdino.github.io,bbirand/compose,phiroict/docker,JimGalasyn/docker.github.io,JimGalasyn/docker.github.io,phiroict/docker,moxiegirl/compose,simonista/compose,screwgoth/compose,viranch/compose,dockerhn/compose,joaofnfernandes/docker.github.io,thieman/compose,andrewgee/compose,aduermael/docker.github.io,VinceBarresi/compose,amitsaha/compose,lukemarsden/compose,thaJeztah/docker.github.io,ralphtheninja/compose,thaJeztah/docker.github.io,iamluc/compose,LuisBosquez/docker.github.io,cclauss/compose,aduermael/docker.github.io,jrabbit/compose,qzio/compose,jzwlqx/denverdino.github.io,menglingwei/denverdino.github.io,sanscontext/docker.github.io,johnstep/docker.github.io,schmunk42/compose,LuisBosquez/docker.github.io,zhangspook/compose,runcom/compose,DoubleMalt/compose,dnephin/compose,johnstep/docker.github.io,artemkaint/compose,docker-zh/docker.github.io,anweiss/docker.github.io,ph-One/compose,simonista/compose,alunduil/fig,browning/compose,londoncalling/docker.github.io,swoopla/compose,cclauss/compose,shin-/docker.github.io,aduermael/docker.github.io,kojiromike/compose,feelobot/compose,jeanpralo/compose,denverdino/denverdino.github.io,heroku/fig,shubheksha/docker.github.io,josephpage/compose,joeuo/docker.github.io,thaJeztah/docker.github.io,mrfuxi/compose,jorgeLuizChaves/compose,shubheksha/docker.github.io,funkyfuture/docker-compose,joeuo/docker.github.io,mohitsoni/compose,shin-/compose,jeanpralo/compose,thaJeztah/docker.github.io,londoncalling/docker.github.io,MSakamaki/compose,rstacruz/compose,talolard/compose,docker/docker.github.io,tpounds/compose,alexisbellido/docker.github.io,benhamill/compose,saada/compose,bfirsh/fig,sanscontext/docker.github.io,denverdino/denverdino.github.io,marcusmartins/compose,nhumrich/compose,rillig/docker.github.io,thaJeztah/compose,sebglazebrook/compose,bcicen/fig,JimGalasyn/docker.github.io,kojiromike/compose,denverdino/compose,goloveychuk/compose,shakamunyi/fig,shubheksha/docker.github.io,calou/compose,heroku/fig,genki/compose,genki/compose,uvgroovy/compose,kikkomep/compose,calou/compose,shin-/docker.github.io,shin-/compose,menglingwei/denverdino.github.io,gdevillele/docker.github.io,tangkun75/compose,abesto/fig,Katlean/fig,rgbkrk/compose,londoncalling/docker.github.io,saada/compose,j-fuentes/compose,dopry/compose,moxiegirl/compose,mark-adams/compose,Chouser/compose,ph-One/compose,cgvarela/compose,RobertNorthard/compose,mnuessler/compose,aduermael/docker.github.io,phiroict/docker,d2bit/compose,LuisBosquez/docker.github.io,sebglazebrook/compose,danix800/docker.github.io,LuisBosquez/docker.github.io,joeuo/docker.github.io,GM-Alex/compose,hoogenm/compose,funkyfuture/docker-compose,aanand/fig,unodba/compose,joaofnfernandes/docker.github.io,unodba/compose,schmunk42/compose,mchasal/compose,rstacruz/compose,alunduil/fig,mchasal/compose,jiekechoo/compose,benhamill/compose,denverdino/denverdino.github.io,shubheksha/docker.github.io,mnowster/compose,bcicen/fig,alexisbellido/docker.github.io,MSakamaki/compose,amitsaha/compose,docker/docker.github.io,ralphtheninja/compose,londoncalling/docker.github.io,anweiss/docker.github.io,jgrowl/compose,londoncalling/docker.github.io,ChrisChinchilla/compose,alexisbellido/docker.github.io,rgbkrk/compose,bbirand/compose,j-fuentes/compose,bdwill/docker.github.io,shin-/docker.github.io,sanscontext/docker.github.io,joeuo/docker.github.io,menglingwei/denverdino.github.io,troy0820/docker.github.io,troy0820/docker.github.io,albers/compose,phiroict/docker,jorgeLuizChaves/compose,alexandrev/compose,rillig/docker.github.io,josephpage/compose,bsmr-docker/compose,mindaugasrukas/compose,anweiss/docker.github.io,mosquito/docker-compose,thaJeztah/docker.github.io,jzwlqx/denverdino.github.io,denverdino/compose,ggtools/compose,vdemeester/compose,TheDataShed/compose,TomasTomecek/compose,denverdino/docker.github.io,pspierce/compose,runcom/compose,michael-k/docker-compose,bdwill/docker.github.io,mbailey/compose,mark-adams/compose,dopry/compose,BSWANG/denverdino.github.io,brunocascio/compose,dilgerma/compose,sanscontext/docker.github.io,ionrock/compose,jonaseck2/compose,glogiotatidis/compose,jzwlqx/denverdino.github.io,xydinesh/compose,ekristen/compose,jgrowl/compose,bdwill/docker.github.io,tiry/compose,vlajos/compose,shubheksha/docker.github.io,TheDataShed/compose,au-phiware/compose,jiekechoo/compose,BSWANG/denverdino.github.io,TomasTomecek/compose,ZJaffee/compose,talolard/compose,sdurrheimer/compose,tiry/compose,mrfuxi/compose,joeuo/docker.github.io,joaofnfernandes/docker.github.io,aanand/fig,mdaue/compose,goloveychuk/compose,rillig/docker.github.io,shin-/docker.github.io,sdurrheimer/compose,ain/compose,albers/compose,shakamunyi/fig,Dakno/compose,dbdd4us/compose,iamluc/compose,prologic/compose,danix800/docker.github.io,lmesz/compose,Yelp/docker-compose,DoubleMalt/compose,d2bit/compose,KevinGreene/compose,lukemarsden/compose,bdwill/docker.github.io,dockerhn/compose,denverdino/docker.github.io,glogiotatidis/compose,joaofnfernandes/docker.github.io,jzwlqx/denverdino.github.io,ouziel-slama/compose,ggtools/compose,tangkun75/compose,alexisbellido/docker.github.io,ZJaffee/compose,denverdino/docker.github.io,charleswhchan/compose,KalleDK/compose,gdevillele/docker.github.io,bobphill/compose,phiroict/docker,BSWANG/denverdino.github.io,bcicen/fig,KevinGreene/compose,prologic/compose,uvgroovy/compose,jessekl/compose,andrewgee/compose,johnstep/docker.github.io,kikkomep/compose,Chouser/compose,docker-zh/docker.github.io,KalleDK/compose,denverdino/docker.github.io,zhangspook/compose,twitherspoon/compose,qzio/compose,BSWANG/denverdino.github.io,ouziel-slama/compose,xydinesh/compose,JimGalasyn/docker.github.io,nhumrich/compose,nerro/compose,vlajos/compose,philwrenn/compose,noironetworks/compose,mosquito/docker-compose,denverdino/denverdino.github.io,gtrdotmcs/compose,browning/compose,jzwlqx/denverdino.github.io,johnstep/docker.github.io,mohitsoni/compose,alexisbellido/docker.github.io,RobertNorthard/compose,gdevillele/docker.github.io,troy0820/docker.github.io,ionrock/compose,troy0820/docker.github.io,mbailey/compose,pspierce/compose,rillig/docker.github.io,shin-/docker.github.io,docker/docker.github.io,brunocascio/compose,danix800/docker.github.io,gdevillele/docker.github.io,artemkaint/compose,docker-zh/docker.github.io,mnowster/compose,BSWANG/denverdino.github.io,philwrenn/compose,heroku/fig,docker/docker.github.io,alexandrev/compose,gdevillele/docker.github.io,michael-k/docker-compose,jessekl/compose,cgvarela/compose