Added initial API endpoint to fetch basic user and associated team information.

spec/controllers/api/v1/users_controller_spec.rb

@@ -0,0 +1,36 @@
+require 'spec_helper'
+
+describe Api::V1::UsersController do
+  before do
+    request.accept = 'application/json'
+  end
+
+  describe '#index' do
+    before do
+      10.times { create(:user_with_team) }
+    end
+
+    it 'returns all users and associated teams' do
+      users = User.all
+
+      get :index
+
+      expect(response).to be_success
+      expect(json["users"].size).to eq(users.size)
+    end
+
+    it 'returns the excpected JSON keys' do
+      get :index
+
+      user_json = json["users"].first
+      nested_team_json = user_json["team"]
+      
+      expect(user_json).to have_key("username")
+      expect(user_json).to have_key("steamid")
+      expect(user_json).to have_key("team")
+      expect(nested_team_json).to have_key("name")
+      expect(nested_team_json).to have_key("tag")
+      expect(nested_team_json).to have_key("logo")
+    end
+  end
+end