Added curly-braces-in-script hint

Signed-off-by: Andreas Hofmann <mail@andreas-hofmann.org>

README.md

@@ -145,6 +145,14 @@ Notes:
       diff /etc/hosts <(ssh somehost cat /etc/hosts)
 ```
 
+- When writing scripts you may want to put all of your code in curly braces:
+```sh
+{
+      # Your code here
+}
+```
+If the closing brace is missing, your script will be prevented from executing due to a syntax error. This makes sense when your script is going to be downloaded from the web, since it prevents partially downloaded scripts from executing.
+
 - Know about "here documents" in Bash, as in `cat <<EOF ...`.
 
 - In Bash, redirect both standard output and standard error via: `some-command >logfile 2>&1` or `some-command &>logfile`. Often, to ensure a command does not leave an open file handle to standard input, tying it to the terminal you are in, it is also good practice to add `</dev/null`.