message: format for google style
diff: -#include "ros/ros.h"
  #include <sensor_msgs/JointState.h>
  +#include "ros/ros.h"
  // include lib_franka ...
  -
  -int main(int argc, char **argv)
  -{
  +int main(int argc, char **argv) {
  ros::init(argc, argv, "simple_viz_node");
  ros::NodeHandle nh("~");
  ros::NodeHandle nhp;
  ros::Rate rate(1000);
  - ros::Publisher joint_pub = nhp.advertise<sensor_msgs::JointState>("joint_state", 1);
  + ros::Publisher joint_pub =
  + nhp.advertise<sensor_msgs::JointState>("joint_state", 1);
  std::vector<std::string> joint_names;
  sensor_msgs::JointState states;
  @@ -17,8 +16,7 @@ int main(int argc, char **argv)
  XmlRpc::XmlRpcValue params;
  nh.getParam("joint_names", params);
  joint_names.resize(params.size());
  - for (int i=0; i<params.size(); ++i)
  - {
  + for (int i = 0; i < params.size(); ++i) {
  joint_names[i] = static_cast<std::string>(params[i]);
  ROS_INFO("joint %d: %s", i, joint_names[i].c_str());
  }
  @@ -30,19 +28,16 @@ int main(int argc, char **argv)
  std::vector<double> dummy;
  dummy.resize(joint_names.size());
  - for (int i=0; i<dummy.size(); ++i)
  - {
  + for (int i = 0; i < dummy.size(); ++i) {
  dummy[i] = 0.0f;
  }
  - while(ros::ok())
  - {
  + while (ros::ok()) {
  // read sensors from franka using libfranka
  // update joint_states to msgs
  states.header.stamp = ros::Time::now();
  - for (int i=0; i<joint_names.size(); ++i)
  - {
  + for (int i = 0; i < joint_names.size(); ++i) {
  states.name.at(i) = joint_names.at(i);
  states.position.at(i) = dummy.at(i);
  states.velocity.at(i) = dummy.at(i);
  