Update readme (#333)

README.md

@@ -44,7 +44,7 @@ send an email to ruben@windmill.dev (founder and creator of Windmill).
 especially concerning flows.
 </p>
 
-![Windmill Screenshot](./imgs/windmill.webp)
+![Windmill Screenshot](./imgs/windmill.png)
 
 Windmill is <b>fully open-sourced</b>:
 
@@ -56,19 +56,19 @@ Windmill is <b>fully open-sourced</b>:
 1. Define a minimal and generic script in Python or Typescript that solve a
    specific task. Here sending an email with SMTP. The code can be defined in
    the provided Web IDE or synchronized with your own github repo:
-   ![Step 1](./imgs/step1.png)
+   ![Step 1](./imgs/python-script.png)
 
 2. Your scripts parameters are automatically parsed and generate a frontend. You
    can narrow down the types during task definition to specify regex for string,
    an enum or a specific format for objects. Each script correspond to an app by
-   itself: ![Step 2](./imgs/step2.png)
+   itself: ![Step 2](./imgs/arguments.png)
 
 3. Make it flow! You can chain your scripts or scripts made by the community
    inside flow by piping output to input using "Dynamic" fields that are just
    plain Javascript. You can also refer to external variables, output from any
    steps or inputs of the flow itself. The flow parameters then generate
    automatically an intuitive forms that can be triggered by anyone, like for
-   scripts. ![Step 3](./imgs/step3.png)
+   scripts. ![Step 3](./imgs/flow.png)
 
 ## Layout