Add the ability to look up user defined typenames

Closes #124

include/chaiscript/language/chaiscript_engine.hpp

@@ -503,6 +503,18 @@ namespace chaiscript
       return ss.str();
     }
 
+    std::string get_type_name(const Type_Info &ti) const
+    {
+      return m_engine.get_type_name(ti);
+    }
+
+    template<typename T>
+    std::string get_type_name() const
+    {
+      return get_type_name(user_type<T>());
+    }
+
+
     /// \brief Loads and parses a file. If the file is already, it is not reloaded
     /// The use paths specified at ChaiScript construction time are searched for the 
     /// requested file.