Updated readme file with improved intro and supported platforms.
Updated readme file with improved intro and supported platforms.

CppMicroServices/CppMicroServices,saschazelzer/CppMicroServices,Heather/CppMicroServices,Heather/CppMicroServices,quinnlin/CppMicroServices,saschazelzer/CppMicroServices,CppMicroServices/CppMicroServices,ksubramz/CppMicroServices,ksubramz/CppMicroServices,mobileFX/CppMicroServices,CppMicroServices/CppMicroServices,CppMicroServices/CppMicroServices,CppMicroServices/CppMicroServices,ksubramz/CppMicroServices,quinnlin/CppMicroServices,mobileFX/CppMicroServices,ksubramz/CppMicroServices,ksubramz/CppMicroServices