add CMake files
Restaure test in cmake (removed for training purpose)
Add KWstyle to check coding rules
Fix path in kwstyle command invoke by ctest.

Hardcode path: should be improved.
Fixed test.
add trn_grid_set_row function

this function is used to shorten the fnc trn_grid_fill
this solves the issue #14
Merge pull request #24 from raoufhamouda/subfunction_in_trn_grid_fill

add trn_grid_set_row function
Fix issue 15, extract code into is_row_equal
Merge pull request #25 from tibaugasc/issue15

Fix issue 15, extract code into is_row_equal