Switch back to Mean
Merge branch 'EachCell' of robin.cc.ndsu.nodak.edu:/git/geotrellis-example into EachCell

Conflicts:
	src/main/scala/net/christeson/geotrellis/template/TemplateResource.scala
Merge branch 'NDVI' into Average

Conflicts:
	src/main/scala/net/christeson/geotrellis/template/TemplateResource.scala
Try to merge changes from NDVI branch.  Still need to work on output
Fix output for Mean
Change output file name
Look for error before committing
Change variable names and use correct one for final computation
  We aren't using tiled rasters for this anymore.
Got some help from Rob on cleaning up unnecessary operations
Try out another hint from Rob; allow framework to use parallel execution
Change value to String right away.
Try to get more parallelism out of this
More parallel goodness.
Merge branch 'Average' of robin.cc.ndsu.nodak.edu:/git/geotrellis-example into Average

Conflicts:
	src/main/scala/net/christeson/geotrellis/template/Settings.scala