Implement remote account unfollow

src/processor/http/index.ts

@@ -3,6 +3,7 @@ import follow from './follow';
 import performActivityPub from './perform-activitypub';
 import processInbox from './process-inbox';
 import reportGitHubFailure from './report-github-failure';
+import unfollow from './unfollow';
 
 const handlers = {
   deliverPost,
@@ -10,6 +11,7 @@ const handlers = {
   performActivityPub,
   processInbox,
   reportGitHubFailure,
+  unfollow
 };
 
 export default (job, done) => handlers[job.data.type](job).then(() => done(), done);