made BarCharts clickable
Update README.md
added license text to new files
Merge remote-tracking branch 'upstream/master'

Conflicts:
	EazeGraphLibrary/EazeGraphLibrary.iml
	README.md
	showcase/src/main/java/org/eazegraph/showcase/fragments/BarChartFragment.java
	showcase/src/main/java/org/eazegraph/showcase/fragments/StackedBarChartFragment.java
	showcase/src/main/res/layout/fragment_bar_chart.xml
	showcase/src/main/res/menu/chart.xml