Use host PID namespace in docker example (#672)
Use host PID namespace in docker example (#672)

* Use host PID namespace in docker example

See https://github.com/prometheus/node_exporter/issues/671

* Update readme for readability

* Fix comments in readme

joehandzik/node_exporter,derekmarcotte/node_exporter,derekmarcotte/node_exporter,siavashs/node_exporter,siavashs/node_exporter,prometheus/node_exporter,joehandzik/node_exporter,siavashs/node_exporter,prometheus/node_exporter,derekmarcotte/node_exporter,siavashs/node_exporter,prometheus/node_exporter,joehandzik/node_exporter,derekmarcotte/node_exporter,joehandzik/node_exporter