Simplify async plan.execute in index.js.  No need for the plan to provide the sink future.
Simplify async plan.execute in index.js.  No need for the plan to provide the sink future.

osric-the-knight/foam,foam-framework/foam,foam-framework/foam,jacksonic/foam,osric-the-knight/foam,jlhughes/foam,foam-framework/foam,jlhughes/foam,jlhughes/foam,osric-the-knight/foam,jacksonic/foam,jacksonic/foam,mdittmer/foam,jlhughes/foam,foam-framework/foam,mdittmer/foam,mdittmer/foam,osric-the-knight/foam,jacksonic/foam,mdittmer/foam,foam-framework/foam