Implement a 'auto-esq' loader for the plugin-stub

[mikelking]

Currently writing a standalone plugin is achievable but not without careful consideration. The plan is to provide some better steps to cover this process in the event that the destination site doe not have bacon installed as an mu-plugin library.

• Add a library auto like loader to the plugin stub

• Update the readme to demonstrate creating a standalone bacon wrapped plugin ( i.e. filet mignon)