erase
Merge branch 'master' of https://github.com/alfcrisci/socialgeosensing

Conflicts:
	README.md
	grid_functions.r
	socialgeosensing_mclass_code.r
Revert "erase"

This reverts commit 0d3c8809ef6ee2938c6306fa4bd4f0524e185fea.

Conflicts:
	grid_functions.r
	socialgeosensing_mclass_code.r