add doxygen

config_reader.h

@@ -6,7 +6,19 @@
 class config_reader
 {
 public:
+  /**
+   * @brief config_reader
+   * Generate a objet to extract info to a config file
+   * @param path File path to extract the file
+   */
   config_reader(std::string);
+  /**
+   * @brief get_param
+   * Permit extract a value in a config file
+   * @param variable Name of a field to extract the info
+   * @param value Info extracted
+   * @return True if the field exists, false if not
+   */
   bool get_param(std::string variable, std::string &value);
 private:
   std::ifstream file;