Use Boost's program_options instead of vendoring clipp

This changes how options are parsed a bit, but tests are happy and
typical usage is unaffected; just the usage screen is different.

This was intended for post-1.0, but turns out I decided to do it.
Boost is already required for pre-C++11, so it doesn't seem like
a big deal to use. If you don't build the tools, it won't be
required.

1 files changed, 2 insertions, 2 deletions

diff --git a/tests/spec/validator_spec.rb b/tests/spec/validator_spec.rb
index ba38563..971b91d 100644
--- a/tests/spec/validator_spec.rb
+++ b/tests/spec/validator_spec.rb
@@ -11,11 +11,11 @@ RSpec.describe 'HorizonScript validation', :type => :aruba do
     context "Utility argument passing" do
         it "requires an installfile to be specified" do
             run_command 'hscript-validate'
-            expect(last_command_started).to have_output(/usage/)
+            expect(last_command_started).to have_output(/Allowed options/)
         end
         it "accepts -i flag" do
             run_command 'hscript-validate foo -i'
-            expect(last_command_started).to_not have_output(/usage/)
+            expect(last_command_started).to_not have_output(/Allowed options/)
         end
         it "doesn't output ANSI colours when instructed not to" do
             run_command 'hscript-validate foo -n'