var names and some minor cleanups

example/example.cpp

@@ -1,12 +1,10 @@
 // example.cpp : Simple logger example
 //
-#include <string>
-#include <functional>
+
 #include "c11log/logger.h"
 #include "c11log/sinks/async_sink.h"
 #include "c11log/sinks/file_sinks.h"
 #include "c11log/sinks/console_sinks.h"
-#include "c11log/details/log_msg.h"
 
 #include "utils.h"
 
@@ -16,24 +14,25 @@ using namespace std::chrono;
 using namespace c11log;
 using namespace utils;
 
+
 int main(int argc, char* argv[])
 {
 
     if(argc || argv) {};
+	const unsigned int howmany = 1000000;
 
     auto fsink = std::make_shared<sinks::rotating_file_sink>("log", "txt", 1024*1024*50 , 5, 0);
     //auto fsink = std::make_shared<sinks::simple_file_sink>("simplelog", "txt");
     auto null_sink = std::make_shared<sinks::null_sink>();
 
-
     logger cout_logger ("cout", {null_sink, sinks::stdout_sink()});
 
-    cout_logger.info() << "Hello cout logger!";
+    cout_logger.info() << "Hello cout logger!";	
 
     logger my_logger ("my_logger", {null_sink});
 
     std::string s(100, '0');
-    const unsigned int howmany = 5000000;
+
     auto start = system_clock::now();
     for(unsigned int i = 0; i < howmany ; i++)
         my_logger.info() << s;