add Local operations issue #478
add new local operations to LocalOpMethods
remove argument added for debugging
add exclusion rule for spark's hadoop transitive dependency
Merge remote-tracking branch 'upstream/master'
Merge branch 'localops' of git://github.com/Markko/geotrellis into localops

Conflicts:
	src/main/scala/geotrellis/raster/op/local/LocalOpMethods.scala
Add unit test for localAbs.
Cleaned up spacing. Added a few wrapper functions
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' into jtscala
Didn't need extra comparison.
Add unit test for local Acos.
Fix test so that int raster contains only ints.
Add unit tests for Asin.
Add local atan unit tests.
Add POST handling for uploading of .arg and .json data
Merge remote-tracking branch 'upstream/master' into feature/fileupload

Conflicts:
	.gitignore
Finished implementing intersection, union, and difference for point, line, polygon, point set, line set, and polygon set.
"Fix" loca arctan2 implementation.

Changed it to work on two op rasters.
Actually it's not done yet. It needs a dualCombine
in order to change possible NODATAs into NaNs.
Move companinon objects above classes for point, line, polygon