create a demonstration folder

demo/ExB_shear/2D_Z_pinch/GS2_method/fort_01.90

demo/ExB_shear/2D_Z_pinch/background_Er/fort_01.90

demo/ExB_shear/2D_Z_pinch/control/fort_01.90

demo/ExB_shear/2D_Z_pinch/fort_00.90

demo/ExB_shear/GS2_method/fast_analysis.m

demo/ExB_shear/GS2_method/fort_00.90

demo/ExB_shear/background_Er/fast_analysis.m

demo/ExB_shear/background_Er/fort.90

demo/ExB_shear/background_Er/fort_00.90

demo/Laguerre_aliasing/2D_Z_pinch/Nmax_0/fort_00.90

...rre_aliasing/2D_Z_pinch/anti_Laguerre_aliasing/fort_00.90

demo/Laguerre_aliasing/2D_Z_pinch/fort_00.90

demo/Laguerre_aliasing/2D_Z_pinch/maximized_sum/fort_00.90