docs: translate README to English and add mobile-login info

Translate French content in README to English and add information about how to fetch club_id and token using the mobile-login command.

README.md

@@ -1,9 +1,9 @@
 # myice
 
-## intro
+## introduction
 
-Avec tout ça on va aller chercher sur MyIce les planning des gamins et générer
-les pdf qu'on veut
+With this tool, you can fetch kids' schedules from MyIce and generate
+the PDFs you need.
 
 ## install
 
@@ -42,15 +42,27 @@ userid = 12345
 token = token1
 club_id = 172
 
-[isaac]
-username = isaac@example.com
+[second_kid]
+username = charlie@example.com
 password = password2
 userid = 67890
 token = token2
 club_id = 186
 ```
 
-## récupérer le schedule
+Note: The `userid`, `token`, and `club_id` fields are optional. If you don't
+have them, the tool can fetch them automatically using the mobile-login
+command (see below).
+
+To fetch the `token` and `club_id` using mobile-login:
+
+```shell
+myice mobile-login
+```
+
+This will output the necessary information that you can add to your `myice.ini` file.
+
+## fetch schedule
 
 ```shell
 myice schedule -o schedule.json
@@ -66,7 +78,7 @@ myice schedule -o schedule.json --config-section isaac
 
 ### listing
 
-Pour récupérer les event des U13 Elite par example:
+To fetch events for U13 Elite for example:
 
 ```shell
 ❯ myice search "U13 (Elite)"
@@ -92,11 +104,11 @@ practice: On-Ice Patinoire des Vernets - Patinoire Extérieure
 game: Saison HC Ajoie
 ```
 
-Et on récupère la convoc du match:
+And we retrieve the match roster:
 
 ### match
 
-alors pour avoir la convocation du match contre Ajoie, l'id c'est 117015:
+To get the roster for the match against Ajoie, the ID is 117015:
 
 ```shell
 ❯ myice game 117015
@@ -110,9 +122,9 @@ To use a specific configuration section:
 ❯ myice game 117015 --config-section isaac
 ```
 
-### entraînement
+### practice
 
-et pour la convoc d'un entraînement:
+And for a practice roster:
 
 ```shell
 ❯ myice practice 561855