Administrative

* Updated "EDR"/"Endpoint detection and response" to "ER"/"Endpoint Response" where relevant
* Removed all actuator specifiers save for "hostname", tied to issues #30 and #31
* Updated Michael Rosa as chair
* Added Michael Rosa, Joe Brule and Russel Warren to acknowledgements
* Fixed heaps of errors in formatting and spelling

Will update to the new template (used by Posture Attribute Collection) once open PR's are merged