Adding public following and followers pages, fix #3

spec/controllers/accounts_controller_spec.rb

@@ -4,14 +4,28 @@ RSpec.describe AccountsController, type: :controller do
   let(:alice)  { Fabricate(:account, username: 'alice') }
 
   describe 'GET #show' do
-    it 'returns 200' do
+    it 'returns http success' do
       get :show, username: alice.username
       expect(response).to have_http_status(:success)
     end
 
-    it 'returns 200 with Atom' do
+    it 'returns http success with Atom' do
       get :show, username: alice.username, format: 'atom'
       expect(response).to have_http_status(:success)
     end
   end
+
+  describe 'GET #followers' do
+    it 'returns http success' do
+      get :followers, username: alice.username
+      expect(response).to have_http_status(:success)
+    end
+  end
+
+  describe 'GET #following' do
+    it 'returns http success' do
+      get :following, username: alice.username
+      expect(response).to have_http_status(:success)
+    end
+  end
 end