add jruby

Author: loadkpi

.github/workflows/build.yml

@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [2.5, 2.6, 2.7, 3.0, 3.1, 3.2, 3.3]
+        ruby: [2.5, 2.6, 2.7, 3.0, 3.1, 3.2, 3.3, jruby-9.3, jruby-head]
         test-group: [1, 2, 3, 4]
     name: Ruby ${{ matrix.ruby }}, test-group ${{ matrix.test-group }}
     steps:

README.md

@@ -17,6 +17,10 @@ Comparing with other popular bot-detection gems:
 
 In order to remain up-to-date, this gem does not accept any crawler data updates – any PRs to edit the crawler data should be offered to the original  [JayBizzle/CrawlerDetect](https://github.com/JayBizzle/Crawler-Detect) project.
 
+## Requirements
+
+- Ruby: MRI 2.5+ or JRuby 9.3+.
+
 ## Installation
 Add this line to your application's Gemfile: