finished the mechanism for setting the language

levels/en_EN/intro/cli

@@ -0,0 +1,27 @@
+title = The command line
+cards = 
+
+[description]
+
+These playing cards are designed to be easy to use and to remember! We'd suggest sticking to them if you don't have a lot of experience with Git!
+
+[cli]
+
+But there's another way to interact with Git:
+
+Try typing `git init` into the black terminal below, and pressing the enter key!
+
+[setup]
+
+rm -rf .git
+
+[win]
+
+# Initialize the time machine!
+test -d .git
+
+[congrats]
+
+Cool! Instead of using the playing cards, you can also do everything via the command line!
+
+The command line is pretty powerful! Often, you can use it to solve tasks faster compared to using a graphical interface.