fix data quality and advance documentation

create_document.sh

readme.md

src/C/descente_radiant

src/C/equation.c

src/C/group.c

src/C/group.h

src/C/main.c

src/droite_nuage_0_1_A.vec

src/droite_nuage_0_1_B.vec

src/droite_nuage_0_2_A.vec

src/droite_nuage_0_2_B.vec

src/droite_nuage_1_2_A.vec

src/droite_nuage_1_2_B.vec

src/droite_nuage_complet_A.vec

src/droite_nuage_complet_B.vec

src/points_X.vec

src/points_Y.vec