added demo site information
added demo site information

studio666/CrowdtiltOpen,timchunght/crowdhero,sapierre/CFP,Crowdtilt/CrowdtiltOpen,lanreayeni/CrowdtiltOpen,Crowdtilt/CrowdtiltOpen,estiens/Crowdhoster,studio666/CrowdtiltOpen,brijbhan/crowdtilt,prathapsridharan/publicworx-crowdtilt,timchunght/crowdhero,lanreayeni/CrowdtiltOpen,prathapsridharan/publicworx-crowdtilt,Crowdtilt/CrowdtiltOpen,estiens/Crowdhoster,timchunght/crowdhero,studio666/CrowdtiltOpen,lanreayeni/CrowdtiltOpen,brijbhan/crowdtilt,sapierre/CFP