Added gsl code to main and makefile
Merge branch 'gsl'
Merge pull request #1 from QUICC-FOR/dev_grid

Merge dev grid
Alloc and dealloc, wrote tests for transition probs
Finished basic implementation of grid cell
Merge branch 'gridcell'
Merge grid_cell_test
Merge branch 'master' of github.com:SteveViss/C-STMFor into dev_grid

Conflicts:
	grid_cell.c