Add cli hints to the first three levels

levels/intro/commit

@@ -9,6 +9,12 @@ Here, let's practice this!
 
 (Your teacher pours some water into a glass.)
 
+[cli]
+
+Again, instead of using the card, you can also type the commands which are printed on it into the black terminal below!
+
+This is totally optional! But this will be a super useful skill in the real world - and it will give you a sparkling golden badge! :)
+
 [setup]
 
 echo "The glass is full of water." > glass

levels/intro/init

@@ -5,10 +5,13 @@ cards = init
 
 You've been accepted to time travel school! Yay! It's your first day! Your teacher explains:
 
-"To do anything with a time machine, you first need to initialize it! Go ahead, try it!"
+"To do anything with a time machine, you first need to initialize it!"
+
+Drag the blue card up to play it!
 
 [cli]
-Instead of playing a card, you can slo type 'git init' directly into your terminal!
+
+Instead of using the card, you can also type `git init` into the black box below, and press the enter key!
 
 [setup]
 

levels/intro/remote

@@ -1,14 +1,20 @@
 title = Working together
-cards = clone checkout commit-auto pull push
+cards = clone commit-auto pull push
 
 [description]
 
-Let's add your name to our list of students!
-
-I already have this list my time machine - let's work together!
+Let's add your name to our list of students! I already have this list my time machine - let's work together!
 
 Drag the "clone" card to my name to make your own copy of my timeline!
 
+[cli]
+
+To clone the teacher's repo via the command line, you need this command:
+
+    git clone ../teacher .
+
+(Don't forget the dot at the end!)
+
 [congrats]
 
 Welcome to time travel school! :) I'll see you for your first class tomorrow!