Added MeasurementsController

command:
rails generate redmine_plugin_controller body_tracking measurements
index create destroy

test/functional/measurements_controller_test.rb

@@ -0,0 +1,8 @@
+require File.expand_path('../../test_helper', __FILE__)
+
+class MeasurementsControllerTest < ActionController::TestCase
+  # Replace this with your real tests.
+  def test_truth
+    assert true
+  end
+end