replaced old readme by pointer to user guide
replaced old readme by pointer to user guide

kieker-monitoring/kieker,leadwire-apm/leadwire-javaagent,HaStr/kieker,kieker-monitoring/kieker,leadwire-apm/leadwire-javaagent,kieker-monitoring/kieker,HaStr/kieker,kieker-monitoring/kieker,HaStr/kieker,HaStr/kieker,kieker-monitoring/kieker,HaStr/kieker