Clairified that the 'make' to create the envPaths should be executed in the startup directory.  Also switched the git diff output to match the solution.

Replaced asynOctet-positionQuery-new-fw.png with a screenshot that doesn't include the mouse pointer

* Added a "Start the IOC" heading (for people who jump to this point)
* Changed the "Enable asyn traces" section to "How to enable asyn traces"
* Added links to screenshots (that don't exist yet)