Added heavy work example

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required (VERSION 2.8.8)
 project (Simple-Web-Server)
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -O3 -Wall -Wextra")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -Wextra")
 
 if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
     if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.8)

http_examples.cpp

@@ -87,6 +87,17 @@ int main() {
         *response << "HTTP/1.1 200 OK\r\nContent-Length: " << number.length() << "\r\n\r\n" << number;
     };
     
+    //Get example simulating heavy work in a separate thread
+    server.resource["^/work$"]["GET"]=[&server](shared_ptr<HttpServer::Response> response, shared_ptr<HttpServer::Request> /*request*/) {
+        *response << "HTTP/1.1 200 OK\r\n";
+        thread work_thread([response] {
+            this_thread::sleep_for(chrono::seconds(5));
+            string message="Work done";
+            *response << "Content-Length: " << message.length() << "\r\n\r\n" << message;
+        });
+        work_thread.detach();
+    };
+    
     //Default GET-example. If no other matches, this anonymous function will be called. 
     //Will respond with content in the web/-directory, and its subdirectories.
     //Default file: index.html

https_examples.cpp

@@ -87,6 +87,17 @@ int main() {
         *response << "HTTP/1.1 200 OK\r\nContent-Length: " << number.length() << "\r\n\r\n" << number;
     };
     
+    //Get example simulating heavy work in a separate thread
+    server.resource["^/work$"]["GET"]=[&server](shared_ptr<HttpsServer::Response> response, shared_ptr<HttpsServer::Request> /*request*/) {
+        *response << "HTTP/1.1 200 OK\r\n";
+        thread work_thread([response] {
+            this_thread::sleep_for(chrono::seconds(5));
+            string message="Work done";
+            *response << "Content-Length: " << message.length() << "\r\n\r\n" << message;
+        });
+        work_thread.detach();
+    };
+    
     //Default GET-example. If no other matches, this anonymous function will be called. 
     //Will respond with content in the web/-directory, and its subdirectories.
     //Default file: index.html

server_http.hpp

@@ -181,6 +181,7 @@ namespace SimpleWeb {
             io_service.stop();
         }
         
+        ///Use this function if you need to recursively send parts of a longer message
         void send(std::shared_ptr<Response> response, const std::function<void(const boost::system::error_code&)>& callback=nullptr) const {
             boost::asio::async_write(*response->socket, response->streambuf, [this, response, callback](const boost::system::error_code& ec, size_t /*bytes_transferred*/) {
                 if(callback)