Update the documentation to show how to use the worker api.

Change-Id: Ic4dc10cfb0a30c5fec28d4bddd19e0e7f2423092
Rename NotDetached enum value to Attached since, well that is a better name.

Change-Id: Ie680907b32a765bcf0fb6144298f486fdf77465d
Merge branch 'execute_process'

Change-Id: I527bf30940d158afd2249eb16a8248d92935738e
Merge branch 'updated_docs'

Change-Id: I12225a0710fd7ee0f8efb5da3ddf0bd032abcfbf