added docs for licensing with hardware identifier

gcontini

2020-10-10 3e8f0cf1feaeb41da4ca1d96d9afdb16486d0273

 src/library/base/file_utils.cpp

@@ -37,7 +37,7 @@
   ifstream in(filename, std::ios::binary);
   if (in) {
      string contents;
      size_t index = in.seekg(0, ios::end).tellg();
      size_t index = (size_t)in.seekg(0, ios::end).tellg();
      size_t limited_size = min(index, max_size);
      contents.resize(limited_size);
      in.seekg(0, ios::beg);