Add convenience wrapper App (again)

src/App.h

@@ -0,0 +1,52 @@
+#ifndef APP_H
+#define APP_H
+
+/* An app is a convenience wrapper of some of the most used fuctionalities and allows a
+ * builder-pattern kind of init. Apps operate on the implicit thread local Loop */
+
+#include "HttpContext.h"
+#include "HttpResponse.h"
+
+namespace uWS {
+template <bool SSL>
+struct TemplatedApp {
+private:
+    HttpContext<SSL> *httpContext;
+
+public:
+
+    ~TemplatedApp() {
+
+    }
+
+    TemplatedApp(const TemplatedApp &other) {
+        httpContext = other.httpContext;
+    }
+
+    TemplatedApp(us_ssl_socket_context_options sslOptions) {
+        httpContext = uWS::HttpContext<SSL>::create(uWS::Loop::defaultLoop(), &sslOptions);
+    }
+
+    TemplatedApp &get(std::string pattern, std::function<void(HttpResponse<SSL> *, HttpRequest *)> handler) {
+        httpContext->onGet(pattern, handler);
+        return *this;
+    }
+
+    TemplatedApp &listen(int port, std::function<void(us_listen_socket *)> handler) {
+        handler(httpContext->listen(nullptr, port, 0));
+        return *this;
+    }
+
+    TemplatedApp &run() {
+        uWS::run();
+        return *this;
+    }
+
+};
+
+typedef TemplatedApp<false> App;
+typedef TemplatedApp<true> SSLApp;
+
+}
+
+#endif // APP_H