added cpan tests

t/00-load.t

@@ -0,0 +1,7 @@
+#!/usr/bin/perl
+
+use Test::More tests => 1;
+use Test::Script::Run;
+
+run_ok( 'feedGnuplot', ['--help'], 'feedGnuplot can run');
+

t/manifest.t

@@ -0,0 +1,13 @@
+#!perl -T
+
+use strict;
+use warnings;
+use Test::More;
+
+unless ( $ENV{RELEASE_TESTING} ) {
+    plan( skip_all => "Author tests not required for installation" );
+}
+
+eval "use Test::CheckManifest 0.9";
+plan skip_all => "Test::CheckManifest 0.9 required" if $@;
+ok_manifest();