[develop/features]

- Some little modification
	modified:   PlasmaSimulationAlpha/grid.cpp
	modified:   PlasmaSimulationAlpha/grid.h
	modified:   PlasmaSimulationAlpha/lib.h
	modified:   PlasmaSimulationAlpha/plasma.cpp
Merge branch 'develop/features' of https://github.com/seagochen/TinyProjects into develop/features
[develop/features]

- Temp
	modified:   CPPExamples/Makefile
	modified:   CPPExamples/PassValue/Sample1.cpp
	modified:   CPPExamples/PassValue/grid.cpp
	typechange: CPPExamples/UsingEigen/lib/Eigen
	new file:   PlasmaSimulationAlpha/PlasmaSimulationAlpha/.gitignore
	modified:   README.md