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/model/cs/content-store-with-stats.hpp b/model/cs/content-store-with-stats.hpp
index 542b88c..b5f7540 100644
--- a/model/cs/content-store-with-stats.hpp
+++ b/model/cs/content-store-with-stats.hpp
@@ -37,54 +37,62 @@
  * @brief Special content store realization that provides ability to track stats of CS operations
  */
 template<class Policy>
-class ContentStoreWithStats :
-    public ContentStoreImpl< ndnSIM::multi_policy_traits< boost::mpl::vector2< Policy, ndnSIM::lifetime_stats_policy_traits > > >
-{
+class ContentStoreWithStats
+  : public ContentStoreImpl<ndnSIM::
+                              multi_policy_traits<boost::mpl::
+                                                    vector2<Policy,
+                                                            ndnSIM::
+                                                              lifetime_stats_policy_traits>>> {
 public:
-  typedef ContentStoreImpl< ndnSIM::multi_policy_traits< boost::mpl::vector2< Policy, ndnSIM::lifetime_stats_policy_traits > > > super;
+  typedef ContentStoreImpl<ndnSIM::
+                             multi_policy_traits<boost::mpl::
+                                                   vector2<Policy,
+                                                           ndnSIM::lifetime_stats_policy_traits>>>
+    super;
 
   typedef typename super::policy_container::template index<1>::type lifetime_stats_container;
 
-  ContentStoreWithStats ()
+  ContentStoreWithStats()
   {
     // connect traceback to the policy
-    super::getPolicy ().template get<1> ().set_traced_callback (&m_willRemoveEntry);
+    super::getPolicy().template get<1>().set_traced_callback(&m_willRemoveEntry);
   }
 
   static TypeId
-  GetTypeId ();
+  GetTypeId();
 
   virtual inline void
-  Print (std::ostream &os) const;
+  Print(std::ostream& os) const;
 
 private:
   static LogComponent g_log; ///< @brief Logging variable
 
-  /// @brief trace of for entry removal: first parameter is pointer to the CS entry, second is how long entry was in the cache
-  TracedCallback< Ptr<const Entry>, Time > m_willRemoveEntry;
+  /// @brief trace of for entry removal: first parameter is pointer to the CS entry, second is how
+  /// long entry was in the cache
+  TracedCallback<Ptr<const Entry>, Time> m_willRemoveEntry;
 };
 
 //////////////////////////////////////////
 ////////// Implementation ////////////////
 //////////////////////////////////////////
 
-
 template<class Policy>
-LogComponent
-ContentStoreWithStats< Policy >::g_log = LogComponent (("ndn.cs.Stats." + Policy::GetName ()).c_str ());
-
+LogComponent ContentStoreWithStats<Policy>::g_log = LogComponent(("ndn.cs.Stats."
+                                                                  + Policy::GetName()).c_str());
 
 template<class Policy>
 TypeId
-ContentStoreWithStats< Policy >::GetTypeId ()
+ContentStoreWithStats<Policy>::GetTypeId()
 {
-  static TypeId tid = TypeId (("ns3::ndn::cs::Stats::"+Policy::GetName ()).c_str ())
-    .SetGroupName ("Ndn")
-    .SetParent<super> ()
-    .template AddConstructor< ContentStoreWithStats< Policy > > ()
+  static TypeId tid =
+    TypeId(("ns3::ndn::cs::Stats::" + Policy::GetName()).c_str())
+      .SetGroupName("Ndn")
+      .SetParent<super>()
+      .template AddConstructor<ContentStoreWithStats<Policy>>()
 
-    .AddTraceSource ("WillRemoveEntry", "Trace called just before content store entry will be removed",
-                     MakeTraceSourceAccessor (&ContentStoreWithStats< Policy >::m_willRemoveEntry))
+      .AddTraceSource("WillRemoveEntry",
+                      "Trace called just before content store entry will be removed",
+                      MakeTraceSourceAccessor(&ContentStoreWithStats<Policy>::m_willRemoveEntry))
 
     // trace stuff here
     ;
@@ -94,21 +102,18 @@
 
 template<class Policy>
 void
-ContentStoreWithStats< Policy >::Print (std::ostream &os) const
+ContentStoreWithStats<Policy>::Print(std::ostream& os) const
 {
-  // const freshness_policy_container &freshness = this->getPolicy ().template get<freshness_policy_container> ();
+  // const freshness_policy_container &freshness = this->getPolicy ().template
+  // get<freshness_policy_container> ();
 
-  for (typename super::policy_container::const_iterator item = this->getPolicy ().begin ();
-       item != this->getPolicy ().end ();
-       item++)
-    {
-      Time alive = lifetime_stats_container::policy_base::get_time (&(*item)) - Simulator::Now ();
-      os << item->payload ()->GetName () << "(alive: " << alive.ToDouble (Time::S) << "s)" << std::endl;
-    }
+  for (typename super::policy_container::const_iterator item = this->getPolicy().begin();
+       item != this->getPolicy().end(); item++) {
+    Time alive = lifetime_stats_container::policy_base::get_time(&(*item)) - Simulator::Now();
+    os << item->payload()->GetName() << "(alive: " << alive.ToDouble(Time::S) << "s)" << std::endl;
+  }
 }
 
-
-
 } // namespace cs
 } // namespace ndn
 } // namespace ns3