Add message regarding verb-suppress-load-unsecure-prelude-warning

#80

examples/prelude.el

@@ -0,0 +1 @@
+(setq my-variable "some value")

examples/prelude.org

@@ -0,0 +1,8 @@
+* Prelude File Test                                                    :verb:
+:properties:
+:Verb-Prelude: prelude.el
+:end:
+post https://postman-echo.com/post
+Content-Type: text/plain
+
+{{my-variable}}

test/init.el

@@ -21,7 +21,6 @@
 
 ;; Set up Verb
 (setq verb-auto-kill-response-buffers 3)
-(setq verb-suppress-load-unsecure-prelude-warning t)
 
 ;; Keybindings
 (with-eval-after-load 'org (define-key org-mode-map (kbd "C-c C-r") verb-command-map))

verb.el

@@ -1194,11 +1194,14 @@ This affects only the current buffer."
         (setq file-extension (file-name-extension (file-name-base filename))))
       (cond
        ((string= "el" file-extension) ; file is Emacs Lisp
-        (when (or verb-suppress-load-unsecure-prelude-warning
-                  (yes-or-no-p
-                   (concat (format "File %s may contain code " filename)
-                           "that may not be safe\nLoad it anyways? ")))
-          (load-file filename)))
+        (if (or verb-suppress-load-unsecure-prelude-warning
+                (yes-or-no-p
+                 (concat (format "File %s may contain code " filename)
+                         "that may not be safe (see: "
+                         "`verb-suppress-load-unsecure-prelude-warning')"
+                         "\nLoad it anyways? ")))
+            (load-file filename)
+          (user-error "Operation cancelled")))
        ((string-match-p "^json.*" file-extension) ; file is JSON(C)
         (let* ((file-contents
                 (with-temp-buffer