Add spec for CLI::Commands::New::Exploit (issue ronin-rb#252)

Added a basic spec file that verifies the command_name matches
the file name for the Exploit command class.

spec/cli/commands/new/exploit_spec.rb

@@ -0,0 +1,12 @@
+require 'spec_helper'
+require 'ronin/cli/commands/new/exploit'
+
+describe Ronin::CLI::Commands::New::Exploit do
+  describe "command_name" do
+    subject { described_class }
+
+    it do
+      expect(subject.command_name).to eq('exploit')
+    end
+  end
+end