Clarify that URLs can be up to 237 characters in length

Author: peterc

.gitignore

@@ -1,3 +1,4 @@
 pkg/*
 *.gem
 .bundle
+.DS_Store

README.md

@@ -2,7 +2,7 @@
 
 *webloc* is a Ruby library that can read from and write to <tt>.webloc</tt> files as used on macOS. These are a variant of 'plist' format files, specifically used for storing links to URLs.
 
-It works on Ruby 2.7 and up, including Ruby 3.x, and supports URLs of up to 255 characters in length.
+It works on Ruby 2.7 and up, including Ruby 3.x, and supports URLs of up to 237 characters in length (but am currently working on extending this).
 
 ## Installation
 

test/webloc_test.rb

@@ -25,7 +25,7 @@ def test_webloc_generates_valid_data
   end
 
   def test_webloc_can_handle_long_urls
-    url = "http://example.com/this-is-a-very-long-url-indeed-it-should-easily-go-over-110-characters-for-our-testing-purposes"
+    url = "http://example.com/this-is-a-very-long-url-indeed-it-should-easily-go-over-110-characters-for-our-testing-purposes-lets-make-it-a-big-longer-to-get-up-to-the-two-hundred-and-fifty-five-limit-just-a-little-bit-further-to-go-nearly-there-1"
     assert_nothing_raised { Webloc.new(url).data }
   end