message: Add missing lua header (mac)
diff: ../../ui/osx/TogglDesktop/Library/poco/NetSSL_OpenSSL/include/,
  ../../ui/osx/TogglDesktop/Library/poco/Crypto/include/,
  ../../ui/osx/TogglDesktop/Library/jsoncpp,
  + ../../ui/osx/TogglDesktop/Library/lua/include/,
  );
  INSTALL_PATH = "@executable_path/../../Contents/Frameworks";
  LIBRARY_SEARCH_PATHS = (
  ../../ui/osx/TogglDesktop/Library/poco/NetSSL_OpenSSL/include/,
  ../../ui/osx/TogglDesktop/Library/poco/Crypto/include/,
  ../../ui/osx/TogglDesktop/Library/jsoncpp,
  + ../../ui/osx/TogglDesktop/Library/lua/include/,
  );
  INSTALL_PATH = "@executable_path/../../Contents/Frameworks";
  LIBRARY_SEARCH_PATHS = (
  