added "show values" to bar chart

Conflicts:
	EazeGraphLibrary/src/main/java/org/eazegraph/lib/charts/BarChart.java
	EazeGraphLibrary/src/main/java/org/eazegraph/lib/charts/BaseChart.java
resolved conflict
Merge branch 'showValues'

Conflicts:
	src/main/java/org/eazegraph/lib/charts/BarChart.java
	src/main/java/org/eazegraph/lib/charts/BaseChart.java