feat: Initial clean release of CHM

packages/pdf-viewer/README.md

@@ -0,0 +1,29 @@
+# PDF VIEWER
+
+A custom built PDF viewer for Joplin's use.
+The viewer is designed to be rendered in an iframe.
+This package produces the build files in `/dist` folder.
+
+## Installation & Usage
+
+From root of the project:
+
+```bash
+yarn install
+```
+This step will also run `yarn build` and build the viewer on post-install and populate the `/dist` folder.
+We are using `weback` for build process.
+
+When working on the viewer, after code updates you need to rebuild the viewer:
+
+```bash
+yarn build
+```
+
+Alternatively, you can use `yarn watch` to rebuild automatically on code changes.
+
+```bash
+yarn watch
+```
+
+The build process of `app-desktop` takes care of copying the content of `/dist` and the root html file to appropriate location.