Revert "after testing"

This reverts commit a733f30a31.

example/env/environment_ex.cpp

@@ -0,0 +1,32 @@
+//  (C) Copyright Gennadiy Rozental 2001-2014.
+//  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)
+
+//  See http://www.boost.org/libs/test for the library home page.
+
+// Boost.Runtime.Param
+#include <boost/test/utils/runtime/env/variable.hpp>
+#include <boost/test/utils/basic_cstring/io.hpp>
+
+namespace rt  = boost::runtime;
+namespace env = boost::runtime::env;
+
+// STL
+#include <iostream>
+
+int main() {
+    std::cout << env::get<int>("NUMBER_OF_PROCESSORS") << '\n' << env::get<rt::cstring>("TEMP") << std::endl;
+
+    boost::optional<int> n;
+
+    env::get( "NUMBER_OF_PROCESSORS", n );
+
+    if( n )
+        std::cout << n << std::endl;
+
+    return 0;
+}
+
+// EOF
+