Gemspec: Use less strict version requirement for asciidoctor gem

Right now asciidoctor-reveal.js builds fails with asciidoctor-doctest complains because of strict dependency requirements. See asciidoctor/asciidoctor-reveal.js#216.
asciidoctor · Nov 5, 2018 · fa7b55f · fa7b55f
1 parent 4ecfda2
commit fa7b55f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/asciidoctor-doctest.gemspec b/asciidoctor-doctest.gemspec
@@ -28,7 +28,7 @@ A tool for end-to-end testing of Asciidoctor backends based on comparing of text
   s.required_ruby_version = '>= 2.0'
 
   # runtime
-  s.add_runtime_dependency 'asciidoctor', '~> 1.5.0'
+  s.add_runtime_dependency 'asciidoctor', '>= 1.5.0', '< 2.1'
   s.add_runtime_dependency 'corefines', '~> 1.2'
   s.add_runtime_dependency 'diffy', '~> 3.0'
   s.add_runtime_dependency 'htmlbeautifier', '~> 1.0'