note on branch existence

2019/2019-06-11_gitTraining/slides/branches.md

@@ -53,7 +53,7 @@ Exit by typing `q`. The branch with the * is the current branch.
 
 Checkout another branch
 ```bash
-$ git checkout branchName
+$ git checkout <branchName>
 ```
 
 <div class="fragment">
@@ -62,6 +62,7 @@ You can switch to the `develop` branch with
 ```bash
 $ git checkout develop
 ```
+If the local branch does not exist but the remote does, it is created automatically.
 
 <div class="fragment">