Added functions for morphological dilation and erosion
Added BSD license
Merge pull request #10 from akfidjeland/master

Added BSD license
Removes incorrect license

This undoes 80f9593973ffc0bdd5bf31ff0ffcd044add85f8c which incorrectly added a
separate license file. The appropriate license was already present in init.lua
Merge pull request #11 from akfidjeland/master

Removes incorrect license
Fixed (and improved) documentation flipping

Fix in-line doc for `vflip` (*horizontally -> vertically*)
Added human understandable flipping tip
Merge pull request #12 from Atcold/patch-1

Fixed (and improved) documentation flipping
Merge pull request #1 from zhangxiangxiao/master

Morphological erosion and dilation functions