draw grid
Merge branch 'master' of https://github.com/Lene91/Visualisierung

Conflicts:
	.metadata/.plugins/org.eclipse.e4.workbench/workbench.xmi
	.metadata/.plugins/org.eclipse.jdt.core/2714632855.index
	InfoVis_Assignment_SS12/src/infovis/scatterplot/View.java