修改mainForm
Merge branch 'master' of https://github.com/minzq1990/physics

Conflicts:
	PhotoelectricityPro/bin/Debug/PhotoelectricityPro.exe
	PhotoelectricityPro/bin/Debug/PhotoelectricityPro.pdb
	PhotoelectricityPro/obj/x86/Debug/PhotoelectricityPro.exe
	PhotoelectricityPro/obj/x86/Debug/PhotoelectricityPro.mainForm.resources
	PhotoelectricityPro/obj/x86/Debug/PhotoelectricityPro.pdb