Update README with network debugging info
Update README with network debugging info

deer-hope/FLEX,iBcker/FLEX,Xiaobin0860/FLEX,BrianBatchelder/FLEX,Automatic/FLEX,tttpeng/FLEX-DatabaseBrowser,NSExceptional/FLEX,msdgwzhy6/FLEX,Suninus/FLEX,Kingside/FLEX,appspector/FLEX,ramoslin02/FLEX,evliu/FLEX,hugo-/FLEX,lintaoSuper/FLEX,NSExceptional/FLEX,tttpeng/FLEX,DaidoujiChen/FLEX,pjebs/FLEX,jdk89757/FLEX,hoaquo/FLEX,erichoracek/FLEX,sunfei/FLEX,Flipboard/FLEX,otatime/FLEX,Flipboard/FLEX,zhaoguohui/FLEX,fbernardo/FLEX,programming086/FLEX