new Chart Demo app, demos all charts in one GUI app.

...amples/src/main/java/com/xeiam/xchart/demo/ChartDemo.java

...amples/src/main/java/com/xeiam/xchart/demo/ChartInfo.java

...src/main/java/com/xeiam/xchart/demo/charts/Example10.java

...src/main/java/com/xeiam/xchart/demo/charts/Example11.java

.../src/main/java/com/xeiam/xchart/demo/charts/Example2.java

.../src/main/java/com/xeiam/xchart/demo/charts/Example3.java

.../src/main/java/com/xeiam/xchart/demo/charts/Example5.java

.../src/main/java/com/xeiam/xchart/demo/charts/Example6.java

.../src/main/java/com/xeiam/xchart/demo/charts/Example7.java

.../src/main/java/com/xeiam/xchart/demo/charts/Example8.java

.../src/main/java/com/xeiam/xchart/demo/charts/Example9.java

.../main/java/com/xeiam/xchart/demo/charts/ExampleChart.java