added single file dependency

.gitignore

@@ -1,3 +1,4 @@
 .vscode
 output/
+node_modules/
 credentials.yaml

docs/README.md

@@ -44,8 +44,11 @@ To run the program, you will need the following dependencies:
 `pip install python-dateutil`  
 `pip install PyYAML`
 
+`npm i github:gildas-lormeau/SingleFile`
+
 You can install these dependencies using
-`pip install -r requirements.txt`
+`pip install -r requirements.txt` AND
+`npm i`
 
 Then run from the command line:
 `python export.py`

package.json

@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "single-file": "github:gildas-lormeau/SingleFile"
+  }
+}