Fix url in emails, add frontendURL helper (#19)

Fixes #16

spec/spec_helper.rb

@@ -0,0 +1,15 @@
+
+RSpec.configure do |config|
+  config.expect_with :rspec do |expectations|
+    expectations.include_chain_clauses_in_custom_matcher_descriptions = true
+  end
+
+  config.mock_with :rspec do |mocks|
+    mocks.verify_partial_doubles = true
+  end
+
+  config.shared_context_metadata_behavior = :apply_to_host_groups
+
+  # config.include Rails.application.routes.url_helpers
+
+end