add local testing instuction in readme

[github-actions[bot]]

Thank you!

Thank you for your pull request :smiley:

:robot: This automated message can help you check the rendered files in your submission for clarity. If you have any questions, please feel free to open an issue in {sandpaper}.

If you have files that automatically render output (e.g. R Markdown), then you should check for the following:

• :dart: correct output
• :framed_picture: correct figures
• :question: new warnings
• :bangbang: new errors

Rendered Changes

:mag: Inspect the changes: https://github.com/carpentries-incubator/bioc-intro/compare/md-outputs..md-outputs-PR-92

The following changes were observed in the rendered markdown documents:

 25-starting-with-data.md                       |  34 ++++++++++++-------------
 data/rnaseq.csv                                |   6 ++---
 fig/40-visualization-rendered-plotmethod-1.png | Bin 11662 -> 11407 bytes
 md5sum.txt                                     |   4 +--
 4 files changed, 21 insertions(+), 23 deletions(-)

What does this mean?

If you have source files that require output and figures to be generated (e.g. R Markdown), then it is important to make sure the generated figures and output are reproducible. This output provides a way for you to inspect the output in a diff-friendly manner so that it's easy to see the changes that occur due to new software versions or randomisation.

:stopwatch: Updated at 2023-04-03 18:47:14 +0000