Corrected file names in the makefile.

Makefile

@@ -10,9 +10,8 @@ clearpdf:
 	rm paper.pdf
 clean:
 	(rm -rf *.ps *.log *.dvi *.aux *.*% *.lof *.lop *.lot *.toc *.idx *.ilg *.ind *.bbl *.blg *.cpt *.out)
-	rm figures/balance-assist-controllers-eig-vs-speeds.png
-	rm figures/bicycle-geometry-mass.png
+	rm figures/balance-assist-eig-vs-speeds.png
+	rm figures/bicycle-with-geometry-mass.png
 	rm figures/gains-vs-speed.png
 	rm figures/pd-simulation.png
-	rm figures/perturbation*.png
-	rm figures/uncontrolled-eig-vs-speeds.png
+	rm figures/torque_angle*.png