Merge pull request #2190 from wiktor-k/master

Accept dash character (-) in GitHub user names when checking for Gist URL

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/linked/resources/GithubResource.java

@@ -192,7 +192,7 @@ public class GithubResource extends LinkedTokenResource {
             return null;
         }
 
-        Pattern p = Pattern.compile("https://gist\\.github\\.com/([a-zA-Z0-9_]+)/([0-9a-f]+)");
+        Pattern p = Pattern.compile("https://gist\\.github\\.com/([a-zA-Z0-9_-]+)/([0-9a-f]+)");
         Matcher match = p.matcher(uri.toString());
         if (!match.matches()) {
             return null;