Add parsers implementing Basic Structures section.

test/basic_structures.cpp

@@ -0,0 +1,19 @@
+/**
+ *   Copyright (C) 2017 Zach Laine
+ *
+ *   Distributed under the Boost Software License, Version 1.0. (See accompanying
+ *   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#include <yaml/parser/basic_structures_def.hpp>
+#include <iostream>
+#include <fstream>
+#include <string>
+
+#include <boost/spirit/include/classic_position_iterator.hpp>
+
+typedef std::string::const_iterator base_iterator_type;
+typedef boost::spirit::classic::position_iterator<base_iterator_type>
+    iterator_type;
+
+template struct omd::yaml::parser::basic_structures<iterator_type>;