 README cleanup. Simplify getting started tasks.
 README cleanup. Simplify getting started tasks.

mesosphere/playa-mesos,austinpapp/playa-mesos,project-emrys/development-environment,austinpapp/playa-mesos,emccode/vagrant,agilemobiledev/playa-mesos,kaysoky/playa-mesos,mesosphere/playa-mesos,project-emrys/development-environment,kaysoky/playa-mesos,fpgeek/playa-mesos,emccode/vagrant,fpgeek/playa-mesos,emccode/vagrant,ilackarms/funC,ashayh/playa-mesos-centos,codedellemc/vagrant,agilemobiledev/playa-mesos,codedellemc/vagrant,codedellemc/vagrant,ashayh/playa-mesos-centos,ilackarms/funC