roughed in bars charts

...-demo/src/main/java/com/xeiam/xchart/demo/XChartDemo.java

...ain/java/com/xeiam/xchart/demo/charts/bar/BarChart01.java

...ain/java/com/xeiam/xchart/demo/charts/bar/BarChart02.java

...ain/java/com/xeiam/xchart/demo/charts/bar/BarChart03.java

...ain/java/com/xeiam/xchart/demo/charts/bar/BarChart04.java

...n/java/com/xeiam/xchart/demo/charts/line/LineChart01.java

...in/java/com/xeiam/xchart/internal/chartpart/AxisTick.java

...main/java/com/xeiam/xchart/internal/chartpart/Legend.java

...c/main/java/com/xeiam/xchart/internal/chartpart/Plot.java

...java/com/xeiam/xchart/internal/chartpart/PlotContent.java

.../xeiam/xchart/internal/chartpart/PlotContentBarChart.java

...xeiam/xchart/internal/chartpart/PlotContentLineChart.java

...rnal/chartpart/axistickcalculator/AxisTickCalculator.java

...rtpart/axistickcalculator/BarChartAxisTickCalculator.java

.../chartpart/axistickcalculator/DateAxisTickCalculator.java

...art/axistickcalculator/LogarithmicAxisTickCalculator.java

...hartpart/axistickcalculator/NumberAxisTickCalculator.java

...src/main/java/com/xeiam/xchart/style/SeriesLineStyle.java