add related to cycle figures for presentation.
new file:   Cycle.svg: from Cycle.kig (export).
new file:   Cycle.eps: from Cycle.svg through inkscape (print: .ps then ps2eps).
new file:   CyclePhases.svg: from Cycle.svg under inkscape.
new file:   CyclePhases.eps: from CyclePhases.svg through inkscape (print: .ps then ps2eps).
modified:   _info.txt: add presentation command lines.