Feature: Update README.md and print version used

README.md

@@ -2,18 +2,29 @@
 
 A GitHub action that runs [black code formatter](https://github.com/ambv/black) for Python.
 
-## Example Workflow
-
-```workflow
-workflow "Example Workflow" {
-  on = "push"
-  resolves = ["Lint"]
-}
-
-action "Lint" {
-  uses = "lgeiger/black-action@master"
-  args = ". --check"
-}
+## Example action
+
+```
+name: Build
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        lfs: false
+    - name: Black Code Formatter
+      uses: tripactions/[email protected]
+      with:
+        args: ". --check -l 100 -t py37"
+
 ```
 
 For a full list of possible `args` checkout the [black docs](https://github.com/ambv/black#command-line-options).
+
+Based on the original [lgeiger/black-action](https://github.com/lgeiger/black-action).

entrypoint.sh

@@ -1,3 +1,4 @@
 #!/bin/sh
 set -e
+sh -c "black --version"
 sh -c "black $*"