message: Document parameters
diff: @@ -39,6 +39,10 @@ const char HTTP_END[] PROGMEM = "</div></body></html>";
  class WiFiManagerParameter {
  public:
  + /**
  + Create custom parameters that can be added to the WiFiManager setup web page
  + @id is used for HTTP queries and must not contain spaces nor other special characters
  + */
  WiFiManagerParameter(const char *custom);
  WiFiManagerParameter(const char *id, const char *placeholder, const char *defaultValue, int length);
  WiFiManagerParameter(const char *id, const char *placeholder, const char *defaultValue, int length, const char *custom);
  