src: Updating code style to conform (more or less) to ndn-cxx style

Also, adding .clang-format that describes the applied style. Note that
this style requires a slightly customized version of clang-format.
diff --git a/examples/ndn-simple-wifi.cpp b/examples/ndn-simple-wifi.cpp
index db54c93..a2b083f 100644
--- a/examples/ndn-simple-wifi.cpp
+++ b/examples/ndn-simple-wifi.cpp
@@ -30,10 +30,11 @@
 using namespace std;
 using namespace ns3;
 
-NS_LOG_COMPONENT_DEFINE ("ndn.WifiExample");
+NS_LOG_COMPONENT_DEFINE("ndn.WifiExample");
 
 //
-// DISCLAIMER:  Note that this is an extremely simple example, containing just 2 wifi nodes communicating
+// DISCLAIMER:  Note that this is an extremely simple example, containing just 2 wifi nodes
+// communicating
 //              directly over AdHoc channel.
 //
 
@@ -47,90 +48,89 @@
 // }
 
 int
-main (int argc, char *argv[])
+main(int argc, char* argv[])
 {
   // disable fragmentation
-  Config::SetDefault ("ns3::WifiRemoteStationManager::FragmentationThreshold", StringValue ("2200"));
-  Config::SetDefault ("ns3::WifiRemoteStationManager::RtsCtsThreshold", StringValue ("2200"));
-  Config::SetDefault ("ns3::WifiRemoteStationManager::NonUnicastMode", StringValue ("OfdmRate24Mbps"));
+  Config::SetDefault("ns3::WifiRemoteStationManager::FragmentationThreshold", StringValue("2200"));
+  Config::SetDefault("ns3::WifiRemoteStationManager::RtsCtsThreshold", StringValue("2200"));
+  Config::SetDefault("ns3::WifiRemoteStationManager::NonUnicastMode",
+                     StringValue("OfdmRate24Mbps"));
 
   CommandLine cmd;
-  cmd.Parse (argc,argv);
+  cmd.Parse(argc, argv);
 
   //////////////////////
   //////////////////////
   //////////////////////
-  WifiHelper wifi = WifiHelper::Default ();
+  WifiHelper wifi = WifiHelper::Default();
   // wifi.SetRemoteStationManager ("ns3::AarfWifiManager");
-  wifi.SetStandard (WIFI_PHY_STANDARD_80211a);
-  wifi.SetRemoteStationManager ("ns3::ConstantRateWifiManager",
-                                "DataMode", StringValue ("OfdmRate24Mbps"));
+  wifi.SetStandard(WIFI_PHY_STANDARD_80211a);
+  wifi.SetRemoteStationManager("ns3::ConstantRateWifiManager", "DataMode",
+                               StringValue("OfdmRate24Mbps"));
 
-  YansWifiChannelHelper wifiChannel;// = YansWifiChannelHelper::Default ();
-  wifiChannel.SetPropagationDelay ("ns3::ConstantSpeedPropagationDelayModel");
-  wifiChannel.AddPropagationLoss ("ns3::ThreeLogDistancePropagationLossModel");
-  wifiChannel.AddPropagationLoss ("ns3::NakagamiPropagationLossModel");
+  YansWifiChannelHelper wifiChannel; // = YansWifiChannelHelper::Default ();
+  wifiChannel.SetPropagationDelay("ns3::ConstantSpeedPropagationDelayModel");
+  wifiChannel.AddPropagationLoss("ns3::ThreeLogDistancePropagationLossModel");
+  wifiChannel.AddPropagationLoss("ns3::NakagamiPropagationLossModel");
 
-  //YansWifiPhy wifiPhy = YansWifiPhy::Default();
-  YansWifiPhyHelper wifiPhyHelper = YansWifiPhyHelper::Default ();
-  wifiPhyHelper.SetChannel (wifiChannel.Create ());
+  // YansWifiPhy wifiPhy = YansWifiPhy::Default();
+  YansWifiPhyHelper wifiPhyHelper = YansWifiPhyHelper::Default();
+  wifiPhyHelper.SetChannel(wifiChannel.Create());
   wifiPhyHelper.Set("TxPowerStart", DoubleValue(5));
   wifiPhyHelper.Set("TxPowerEnd", DoubleValue(5));
 
-
-  NqosWifiMacHelper wifiMacHelper = NqosWifiMacHelper::Default ();
+  NqosWifiMacHelper wifiMacHelper = NqosWifiMacHelper::Default();
   wifiMacHelper.SetType("ns3::AdhocWifiMac");
 
-  Ptr<UniformRandomVariable> randomizer = CreateObject<UniformRandomVariable> ();
-  randomizer->SetAttribute ("Min", DoubleValue (10));
-  randomizer->SetAttribute ("Max", DoubleValue (100));
+  Ptr<UniformRandomVariable> randomizer = CreateObject<UniformRandomVariable>();
+  randomizer->SetAttribute("Min", DoubleValue(10));
+  randomizer->SetAttribute("Max", DoubleValue(100));
 
   MobilityHelper mobility;
-  mobility.SetPositionAllocator ("ns3::RandomBoxPositionAllocator",
-                                 "X", PointerValue (randomizer),
-                                 "Y", PointerValue (randomizer),
-                                 "Z", PointerValue (randomizer));
+  mobility.SetPositionAllocator("ns3::RandomBoxPositionAllocator", "X", PointerValue(randomizer),
+                                "Y", PointerValue(randomizer), "Z", PointerValue(randomizer));
 
-  mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel");
+  mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
 
   NodeContainer nodes;
-  nodes.Create (2);
+  nodes.Create(2);
 
   ////////////////
   // 1. Install Wifi
-  NetDeviceContainer wifiNetDevices = wifi.Install (wifiPhyHelper, wifiMacHelper, nodes);
+  NetDeviceContainer wifiNetDevices = wifi.Install(wifiPhyHelper, wifiMacHelper, nodes);
 
   // 2. Install Mobility model
-  mobility.Install (nodes);
+  mobility.Install(nodes);
 
   // 3. Install NDN stack
-  NS_LOG_INFO ("Installing NDN stack");
+  NS_LOG_INFO("Installing NDN stack");
   ndn::StackHelper ndnHelper;
-  // ndnHelper.AddNetDeviceFaceCreateCallback (WifiNetDevice::GetTypeId (), MakeCallback (MyNetDeviceFaceCallback));
-  ndnHelper.SetForwardingStrategy ("ns3::ndn::fw::BestRoute");
-  ndnHelper.SetContentStore ("ns3::ndn::cs::Lru", "MaxSize", "1000");
-  ndnHelper.SetDefaultRoutes (true);
-  ndnHelper.Install (nodes);
+  // ndnHelper.AddNetDeviceFaceCreateCallback (WifiNetDevice::GetTypeId (), MakeCallback
+  // (MyNetDeviceFaceCallback));
+  ndnHelper.SetForwardingStrategy("ns3::ndn::fw::BestRoute");
+  ndnHelper.SetContentStore("ns3::ndn::cs::Lru", "MaxSize", "1000");
+  ndnHelper.SetDefaultRoutes(true);
+  ndnHelper.Install(nodes);
 
   // 4. Set up applications
-  NS_LOG_INFO ("Installing Applications");
+  NS_LOG_INFO("Installing Applications");
 
-  ndn::AppHelper consumerHelper ("ns3::ndn::ConsumerCbr");
-  consumerHelper.SetPrefix ("/test/prefix");
-  consumerHelper.SetAttribute ("Frequency", DoubleValue (10.0));
-  consumerHelper.Install (nodes.Get (0));
+  ndn::AppHelper consumerHelper("ns3::ndn::ConsumerCbr");
+  consumerHelper.SetPrefix("/test/prefix");
+  consumerHelper.SetAttribute("Frequency", DoubleValue(10.0));
+  consumerHelper.Install(nodes.Get(0));
 
-  ndn::AppHelper producerHelper ("ns3::ndn::Producer");
-  producerHelper.SetPrefix ("/");
-  producerHelper.SetAttribute ("PayloadSize", StringValue("1200"));
-  producerHelper.Install (nodes.Get (1));
+  ndn::AppHelper producerHelper("ns3::ndn::Producer");
+  producerHelper.SetPrefix("/");
+  producerHelper.SetAttribute("PayloadSize", StringValue("1200"));
+  producerHelper.Install(nodes.Get(1));
 
   ////////////////
 
-  Simulator::Stop (Seconds (30.0));
+  Simulator::Stop(Seconds(30.0));
 
-  Simulator::Run ();
-  Simulator::Destroy ();
+  Simulator::Run();
+  Simulator::Destroy();
 
   return 0;
 }