update phonegap-version pref to 3.0
update phonegap-version pref to 3.0

phonegap/phonegap-docs,jcolinmurray/phonegap-docs,barnyp/phonegap-docs,maveriklko9719/Coffee-Spills,maveriklko9719/Coffee-Spills,openbizgit/phonegap-docs,maveriklko9719/Coffee-Spills,jcolinmurray/phonegap-docs,phonegap/phonegap-docs,openbizgit/phonegap-docs,phonegap/phonegap-docs,barnyp/phonegap-docs