Added a couple of usage examples

README.md

@@ -2,12 +2,59 @@
 
 Lolafect is a collection of Python bits that help us build our Prefect flows.
 
+## Quickstart
+
+You can find below examples of how to leverage `lolafect` in your flows.
+
+**Let the `LolaConfig` object do the boilerplate env stuff for you**
+
+```python
+from lolafect.lolaconfig import build_lolaconfig
+
+lolaconfig = build_lolaconfig(
+    flow_name="some-flow",
+    env_s3_bucket="bucket",
+    kubernetes_labels=["some_label"],
+    kubernetes_image="the-image:latest",
+)
+
+# Now you can access all the env stuff from here
+lolaconfig.FLOW_NAME
+lolaconfig.FLOW_NAME_UDCS
+lolaconfig.STORAGE
+lolaconfig.KUBERNETES_IMAGE
+lolaconfig.KUBERNETES_LABELS
+lolaconfig.SLACK_WEBHOOKS
+# etc
+```
+
+**Send a warning message to slack if your tasks fails**
+
+```python
+from prefect.triggers import any_failed
+from lolafect.slack import SendSlackMessageTask
+
+send_warning_message_on_any_failure = SendSlackMessageTask(trigger=any_failed) # You can generate other tasks with 
+#different triggers. For example, you can send a message when all tasks fail, or all tasks succeed
+
+with Flow(...) as flow:
+    crucial_task_result = some_crucial_task()
+
+    send_warning_message_on_any_failure(
+        webhook_url="the-channel-webhook", # You can probably try to fetch this from lolaconfig.SLACK_WEBHOOKS
+        text_to_send="Watchout, the flow failed!",
+        upstream_tasks=[crucial_task_result]
+    )
+```
 
 ## How to test
 
 IDE-agnostic:
+
 1. Set up a virtual environment which contains both `lolafect` and the dependencies listed in `requirements-dev.txt`.
 2. Run: `pytests tests`
 
-In Pycharm: if you configure `pytest` as the project test runner, Pycharm will most probably autodetect the test 
-folder and allow you to run the test suite within the IDE.
+In Pycharm:
+
+- If you configure `pytest` as the project test runner, Pycharm will most probably autodetect the test
+  folder and allow you to run the test suite within the IDE.