Document how to add workshops

README.md

@@ -6,6 +6,14 @@ A friendlier way to view these files may be accessed through [our workshop archi
 
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+## Contributing a new workshop
+1. [Fork this repository](https://github.com/utmgdsc/workshops/fork).
+2. Edit the `metadata.yml` file, located in the folder of the year you want to add a workshop to.
+3. Locate or create a new category for the workshop, which are the keys in the `metadata.yml` file.
+4. Refer to the schema below to fill in the details of the workshop. Workshops are represented as objects in the array of the category.
+   - Slides can be uploaded to the same directory as the `metadata.yml` file, and referenced by the filename in the `slides` property.
+5. [Create a pull request](https://github.com/utmgdsc/workshops/compare) to merge your changes into the main repository.
+
 ## Schema
 
 Each file in /:year/metadata.yml has the following schema: