ENH more precise instruction for PR

Author: tomMoral

README.md

@@ -1,4 +1,4 @@
-# Assignment 2 for the DataCamp course X-DataScience Master
+# Assignment 2 for the DataCamp course X-DataScience Master - pandas
 
 ## What we want you to learn by doing this assignment:
 
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   - Fork the repository by clicking on the `Fork` button on the upper right corner
   - Clone the repository of your fork with: `git clone https://github.com/MYLOGIN/datacamp-assignment-pandas` (replace MYLOGIN with your GitHub login)
-  - Create a branch called `myassignment` using `git checkout -b myassignment`
+  - Create a branch called `MYLOGIN` using `git checkout -b MYLOGIN`
   - Make the changes to complete the assignment. You have to modify the files that contain `questions` in their name. Do not modify the files that start with `test_`.
-  - Open the pull request on GitHub
+  - Check locally that your solution meet the test by running `pytest` from the root of the repo. You may need to install `pytest` using `pip` or `conda`.
+  - Check the code formating for your solution using `flake8`. You may need to install `flake8` using `pip` or `conda`.
+  - Open the pull request on GitHub:
+     - Create a commit with `git add -u` and `git commit -m "UP my solution"`
+     - Push your branch on your fork: `git push -u origin MYLOGIN`
+     - Go to your repo in your browser and click the `Open a PR` button.
   - Keep pushing to your branch until the continuous integration system is green.
   - When it is green notify the professors on Slack that your done.