docs: 📝 Updated readme.md with some images and installation steps.

README.md

@@ -1,2 +1,26 @@
-# api-test
+# About lifen-postman
+
+This repository holds some PostMan files that performs tests against Lifen's Fhir API. They represent my handout regardinf the technical test.
+
+## Installation and execution
+
+PostMan is required to run them.
+
+1. Download the 3 jsons files
+2. Create or select a Workspace that will get them
+3. `File` > `Import...` and drag-and-drop them on the lightbox.
+    ![Import modale with some files ready to be imported](./public/import-screen-with-files.jpg)
+4. Open the collection properties
+    ![a Collection Properties panel in PostMan](./public/lifen-api-collection-properties.jpg)
+5. Run the files with the following settings
+    * Run the `POST a Json Web Token` is optional, the collection handle the JWT generation and use for each requests
+    * The servers don't like to be rushed, you will get better results by addind a **Delay** of **500**ms
+    * You can save the responses to diagnose them after run.
+    * The request `GET CommunicationRequest` wait 10 sec before being launched, because Irène may not have processed the CommunicationRequest that early.
+    * There is no need to save the cookies, as there will be no cookies backed here 😔🍪
+    ![a runner in PostMan](./public/lifen-api-runner.jpg)
+
+## an Example of Test Report in PostMan
+
+![an Example of Test Report](./public/run-result-example.jpg)