my first test
my second test
my third test
refactor neighbor module(untest)
refactor neighbor module(test, but no docstring )
delete no useful file (.py)
Merge pull request #3 from zhenzonglei/rg

Rg
refactor the class Seeds in region growing module
refactor region growing module -- basic version
modify neighbor module: the input parameter REF is removed  from init function to compute function
refactor region growing module -- version 2
add in2d and intersect2d to do set operator in 2D array
refactor SeededRegionGrowing Class. Now, It can work.
Merge pull request #4 from zhenzonglei/rg

refactor SeededRegionGrowing Class. Now, It can work.
remove connectivity.py and add test.py
Merge pull request #5 from zhenzonglei/rg

remove connectivity.py and add test.py