init the awkward code

static/html/jspaint/CONTRIBUTING.md

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+# Contributing
+
+## Pull Requests
+
+Let me know before you work on something by opening an issue or commenting on an existing one.
+
+Someone may be already working on it, or I may have specific plans or requirements.
+I don't want your effort to be wasted!
+
+## Issues
+
+[Bugs and feature requests are tracked on GitHub.](https://github.com/1j01/jspaint/issues)
+
+Before opening an issue for a bug or feature request, search to see if it's already been reported.
+
+You can also [email me](mailto:isaiahodhner@gmail.com) if you prefer.
+
+## Windows 98
+
+Note: JS Paint's GUI is primarily based on Paint from Windows 98.
+There's a nice [online emulator](https://copy.sh/v86/?profile=windows98)
+that you can play around with and use as a reference.
+
+## Dev Setup
+
+See [**Development Setup**](./README.md#Development-Setup) on the readme.
+
+### Project Structure
+
+- `index.html` and `app.js` are the main entry points for the app.
+- `functions.js` has functions that shouldn't own any global state, altho they very much modify global state, and there may be a few stateful global variables defined in there.
+- The project uses [jQuery](https://jquery.com/), and a convention of prefixing variables that hold jQuery objects with `$`
+	- There are also some weird pseudo-classes like `$ColorBox` which extend and return jQuery objects. I don't recommend this pattern for new code.
+- Menu code and windowing code is in `lib/os-gui/` and should be kept in sync with the [os-gui](https://github.com/1j01/os-gui) project.
+	- (Maybe I should version this using git-subrepo?)
+	- Some window behavior specific to jspaint is in `$ToolWindow.js` and `$Component.js`
+- `image-manipulation.js` should contain just rendering related code, and ideally no dialogs except maybe some error messages.
+	- Some image manipulation code is also in `tools.js` and `functions.js`
+- CSS is in `styles/`
+	- Layout-important CSS is kept separate from theme CSS
+- Localization data is in `localization/`
+	- As of writing there's no good way to contribute translations, but [get in touch!](https://github.com/1j01/jspaint/issues/80)
+
+Any good IDE or code editor has a project-wide search (often with <kbd>Ctrl+Shift+F</kbd>). I use this all the time.  
+I also use the "Intellisense" feature of [VS Code](https://code.visualstudio.com/) to jump to function definitions (an extra convenience over searching for function names).