Add contributing documentation

README.md

@@ -61,4 +61,10 @@ More platforms coming soon.
 
 ## Contributing
 
-TODO
+TLDR:
+- Fork the repository
+- Create a branch
+- Make your changes
+- Submit a pull request
+
+The [contributing document](docs/CONTRIBUTING.md) provides more information.

docs/CONTRIBUTING.md

@@ -0,0 +1,42 @@
+# Contributing
+
+## TLDR
+
+- Fork the repository
+- Create a branch
+- Make your changes
+- Submit a pull request
+
+## Adding New Datasets
+
+- Create a new table in the primary database
+  - Table name should match the dataset's official name 
+- Create a rails model for the table
+  - Model should be namespaced under the department that publishes the dataset
+  - Model should set self.table_name to the dataset's official name
+- Add the following API endpoint constants:
+  - SODA2_API_ENDPOINT
+  - SODA2_CSV_API_ENDPOINT
+  - SODA3_API_ENDPOINT
+  - SODA3_CSV_API_ENDPOINT
+- Add the following metadata class methods:
+  - url
+  - name
+  - description
+  - data_provided_by
+  - agency
+  - update_frequency
+  - automation
+  - date_made_public
+  - category
+  - tags
+- Add the following import class methods:
+  - import (public)
+  - import_soda2 (private)
+  - import_soda2_csv (private)
+  - import_soda3 (private)
+  - import_soda3_csv (private)
+
+## Adding New ETL Workflows
+
+TODO