Motivation

The instructions for OpenSuse are incomplete, for Leap 15.1 at least. The command

sudo zypper install -t pattern devel_ruby devel_C_C++

does not install ruby-devel (only ruby2.5-devel):

Contents :
S | Name

Update documentation https://tianqi.name/jekyll-TeXt-theme/post/2017/05/05/chart.html to show examples with options setting. It's not clear what is supposed to get passed in that section.

From Chart.js

var myBarChart = new Chart(ctx, {
    type: 'bar',
    data: data,
    options: options
});

For my bar chart, I wanted to implement the following:

options: {
    scale