Add a badge and fix the CI script

Author: LemonBoy

.github/workflows/check.yml

@@ -18,4 +18,4 @@ jobs:
     - name: Build
       run: CFLAGS='-DWITH_XINERAMA=1' make
     - name: Check
-      run: ./lemonbar -h
+      run: ./lemonbar -h || exit 0

README.pod

@@ -2,6 +2,8 @@
 
 lemonbar - Featherweight lemon-scented bar
 
+=for HTML <img src="https://github.com/LemonBoy/bar/workflows/Does%20this%20build%20look%20infected%3F/badge.svg">
+
 =head1 SYNOPSIS
 
 I<lemonbar> [-h | -g I<width>B<x>I<height>B<+>I<x>B<+>I<y> | -o | -b | -d | -f I<font> | -p | -n I<name> | -u I<pixel> | -B I<color> | -F I<color> | -U I<color>]