Add initial CLI class

spec/cli_spec.rb

@@ -0,0 +1,13 @@
+require "spec_helper"
+require 'periodicity/cli'
+
+describe Periodicity::CLI do
+  let(:cli) { Periodicity::CLI.instance }
+
+  describe "#run" do
+    it "should try to initialize rails with #load_rails" do
+      expect(cli).to receive(:load_rails)
+      cli.run
+    end
+  end
+end