Add GCM push for pushing OneMDM app to devices

spec/factories/app.rb

@@ -1,7 +1,7 @@
 FactoryGirl.define do
   factory :app do
-    name "My Ultimate Application"
-    package_name "my.ultimate.application"
+    name "One MDM"
+    package_name "com.multunus.onemdm"
   end
 
 end

spec/factories/batch_installations.rb

@@ -1,6 +1,6 @@
 FactoryGirl.define do
   factory :batch_installation do
-    app_id 1
+    association :app
   end
 
 end

spec/factories/installations.rb

@@ -1,8 +1,7 @@
 FactoryGirl.define do
   factory :installation do
-    device_id 1
-    batch_installation_id 1
-    status 1
+    association :device
+    association :batch_installation
   end
 
 end