update readme

Author: bast

README.md

@@ -1,23 +1,23 @@
-# Exercise to practice collaborative forking workflow
+### Exercise to practice collaborative forking workflow
 
 We will run this exercise in groups and we number the groups
 1, 2, ..., etc.
 
-
-## Objectives
+Objectives:
 
 - Learn how to fork, modify the fork, and file a pull request towards forked repo
 - Learn how to update your fork with upstream changes
 
 
-## First part: Fork, clone, and modify
+#### First part: Fork, clone, and modify
 
-First fork this repository and then clone the fork.
+First fork this repository ion GitHub into your namespace and then clone the fork to your computer.
 
 Then add a file `groupN.py` where N is your group number, e.g. `group17.py`.
 
 This file should contain a function called `tweet()` which returns
 a string of maximum 140 characters, for instance:
+
 ```python
 def tweet():
     return "please replace this boring sentence with something more fun"
@@ -27,31 +27,33 @@ The file `main.py` automatically calls all `tweet()` functions defined in files
 `groupN.py` (1 <= N <= 50). You do not need to edit `main.py`.
 
 You can test it:
-```
+
+```shell
 $ python main.py
 
 group 17 says: please replace this boring sentence with something more fun
 ```
 
-Once you see your sentence correctly printed, commit and push.  Don't worry
+Once you see your sentence correctly printed, commit and push to your fork. Don't worry
 nothing gets out to Twitter but please mind that your changes will be public on
 GitHub (but you can delete them later).
 
 
-## Second part: File a pull request
+#### Second part: File a pull request
 
 Then file a pull request towards the repository where you forked from.
 
 Wait until we integrate all pull requests into the central repo
-together.
+together on the big screen.
 
 
-## Third part: Update your fork
+#### Third part: Update your fork
 
 We do this part **after the contributions from all groups have been integrated**.
 
 Once this is done, practice to update your forked repo with the upstream
 changes and verify that you got the files created by other groups:
-```
+
+```shell
 $ python main.py
 ```