Allow dots in branch name

Author: xuanxu

app/responders/repo_checks_responder.rb

@@ -6,7 +6,7 @@ class RepoChecksResponder < Responder
 
   def define_listening
     @event_action = "issue_comment.created"
-    @event_regex = /\A@#{bot_name} check repository(?: from branch ([\/\w-]+))?\.?\s*$/i
+    @event_regex = /\A@#{bot_name} check repository(?: from branch ([\/\.\w-]+))?\.?\s*$/i
   end
 
   def process_message(message)

spec/responders/repo_checks_responder_spec.rb

@@ -20,7 +20,7 @@
       expect(@responder.event_regex).to match("@botsci check repository")
       expect(@responder.event_regex).to match("@botsci check repository    \r\n")
       expect(@responder.event_regex).to match("@botsci check repository\r\nmore")
-      expect(@responder.event_regex).to match("@botsci check repository from branch custom-branch")
+      expect(@responder.event_regex).to match("@botsci check repository from branch custom-branch_6.0")
       expect(@responder.event_regex).to match("@botsci check repository from branch custom/branch")
       expect(@responder.event_regex).to match("@botsci check repository from branch development    \r\n")
       expect(@responder.event_regex).to_not match("@botsci check repository from branch ")