Replaced deprecated markdown-to-react-components with marksy

[ranneyd]

Issue: #1114

What I did

Looking at issue 1114 (#1114)...
The error came from a package called markdown-to-react-components. Looking at this package's github (https://github.com/christianalfoni/markdown-to-react-components) it's clear that the package is deprecated. They recommend using marksy (https://github.com/cerebral/marksy).

Marksy appears to be a fork of markdown-to-react-components because the APIs are almost identical (namely, the configuration is exactly the same). This made swapping out the old version for the new one very easy, which is what I did. I also updated the name of the config (which can be passed as an argument to this addon) to reflect the new underlying mechanism.

How to test

1. Create a simple Storybook project with info (use the readme of @storybook/addon-info for helP)
2. Make a story for a component WITH PROPTYPES DEFINED.
3. Confirm that when you run your storybook, clicking on "Show Info" at the top shows the correct PropType info.

[shilman]

Thanks @ranneyd for diagnosing the problem and then fixing it. You rock! 👊

Edited the PR description slightly. Code looks great. I'll test it out on my machine and merge if it works.

Many thanks!

[codecov]

Codecov Report

Merging #1188 into master will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master    #1188   +/-   ##
=======================================
  Coverage   13.31%   13.31%           
=======================================
  Files         199      199           
  Lines        4588     4588           
  Branches      531      540    +9     
=======================================
  Hits          611      611           
+ Misses       3501     3492    -9     
- Partials      476      485    +9

Impacted Files	Coverage Δ
addons/info/src/index.js	0% <ø> (ø)	⬆️
addons/info/src/components/Story.js	0% <0%> (ø)	⬆️
app/react-native/src/bin/storybook-start.js	0% <0%> (ø)	⬆️
addons/knobs/src/components/types/Object.js	4.81% <0%> (ø)	⬆️
addons/storyshots/src/storybook-channel-mock.js	0% <0%> (ø)	⬆️
app/react/src/client/preview/error_display.js	0% <0%> (ø)	⬆️
...rc/modules/ui/components/left_panel/text_filter.js	33.33% <0%> (ø)	⬆️
app/react/src/client/preview/reducer.js	0% <0%> (ø)	⬆️
addons/knobs/src/KnobManager.js	39.13% <0%> (ø)	⬆️
lib/ui/src/modules/ui/configs/init_panels.js	25% <0%> (ø)	⬆️
... and 16 more

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[shilman]

@ranneyd Looks like you need to update package.json to add marksy and remove markdown-to-react-components?

[ranneyd]

facepalm

I actually had but I accidentally undid that change. Fixing now.

[ranneyd]

@shilman try it now. Let me know how it goes!

[shilman]

@ranneyd Figured you must have made the changes at some point to get this working. Looks great and thanks so much for contributing! 🏅 Merging.