Merge pull request #2 from chrisdutz/feature/updated-default-subjects

Prepared the changes for changing the subject line defaults.
diff --git a/ghd-notifier.py b/ghd-notifier.py
index 7583bfb..505cff0 100644
--- a/ghd-notifier.py
+++ b/ghd-notifier.py
@@ -102,6 +102,9 @@
                 # Otherwise use the default one, which is located in the title of the template.
                 else:
                     subject = subject.format(**locals()).strip()
+                    # Small "hack" to add a prefix of "Re: " to everything that's not creating a new discussion.
+                    if action_name != "new_discussion"
+                        subject = "Re: " + subject
             except (KeyError, ValueError) as e:  # Template breakage can happen, ignore
                 print(e)
                 return
diff --git a/templates/comment-action.txt b/templates/comment-action.txt
index 658c15c..ea6db5c 100644
--- a/templates/comment-action.txt
+++ b/templates/comment-action.txt
@@ -1,4 +1,4 @@
-[GitHub] [{repository}] {user} {action_human} {title}
+Re: [D] {title} [{repository}]
 --
 GitHub user {user} {action_human} {title}
 
diff --git a/templates/thread-action.txt b/templates/thread-action.txt
index aa95a6e..426b013 100644
--- a/templates/thread-action.txt
+++ b/templates/thread-action.txt
@@ -1,4 +1,4 @@
-[GitHub] [{repository}] {user} {action} a discussion: {title}
+[D] {title} [{repository}]
 --
 GitHub user {user} {action} a discussion: {title}