Adding docs into the readme for gtest
Adding docs into the readme for gtest

dankenigsberg/logcabin,gaoning777/logcabin,nhardt/logcabin,chaozh/logcabin,jimpelton/mingle-logcabin,logcabin/logcabin,logcabin/logcabin,dankenigsberg/logcabin,dankenigsberg/logcabin,nhardt/logcabin,TigerZhang/logcabin,TigerZhang/logcabin,nhardt/logcabin,jimpelton/mingle-logcabin,tempbottle/logcabin,nhardt/logcabin,gaoning777/logcabin,chaozh/logcabin,tempbottle/logcabin,gaoning777/logcabin,gaoning777/logcabin,TigerZhang/logcabin,jimpelton/mingle-logcabin,tempbottle/logcabin,chaozh/logcabin,logcabin/logcabin,logcabin/logcabin,tempbottle/logcabin,dankenigsberg/logcabin,TigerZhang/logcabin,chaozh/logcabin