update readme a bit

README.md

@@ -94,6 +94,18 @@ if(request->hasHeader("MyHeader")){
   AsyncWebHeader* h = request->getHeader("MyHeader");
   Serial.printf("MyHeader: %s\n", h->value().c_str());
 }
+
+//List all collected headers (Compatibility)
+int headers = request->headers();
+int i;
+for(i=0;i<headers;i++){
+  Serial.printf("HEADER[%s]: %s\n", headerName(i).c_str(),header(i).c_str());
+}
+
+//get specific header by name (Compatibility)
+if(request->hasHeader("MyHeader")){
+  Serial.printf("MyHeader: %s\n", header("MyHeader").c_str());
+}
 ```
 
 ### GET, POST and FILE parameters
@@ -112,16 +124,26 @@ for(int i=0;i<params;i++){
 }
 
 //Check if GET parameter exists
-bool exists = request->hasParam("download");
-AsyncWebParameter* p = request->getParam("download");
+if(request->hasParam("download"))
+  AsyncWebParameter* p = request->getParam("download");
 
 //Check if POST (but not File) parameter exists
-bool exists = request->hasParam("download", true);
-AsyncWebParameter* p = request->getParam("download", true);
+if(request->hasParam("download", true))
+  AsyncWebParameter* p = request->getParam("download", true);
 
 //Check if FILE was uploaded
-bool exists = request->hasParam("download", true, true);
-AsyncWebParameter* p = request->getParam("download", true, true);
+if(request->hasParam("download", true, true))
+  AsyncWebParameter* p = request->getParam("download", true, true);
+
+//List all parameters (Compatibility)
+int args = request->args();
+for(int i=0;i<args;i++){
+  Serial.printf("ARG[%s]: %s\n", argName(i).c_str(), arg(i).c_str());
+}
+
+//Check if parameter exists (Compatibility)
+if(equest->hasArg("download"))
+  String arg = request->arg("download");
 ```
 
 ### FILE Upload handling
@@ -470,48 +492,52 @@ void onEvent(AsyncWebSocket * server, AsyncWebSocketClient * client, AwsEventTyp
 //Server methods
 AsyncWebSocket ws("/ws");
 //printf to a client
-ws.printf([client id], [arguments...]);
+ws.printf((uint32_t)client_id, arguments...);
 //printf to all clients
-ws.printfAll([arguments...]);
+ws.printfAll(arguments...);
 //printf_P to a client
-ws.printf_P([client id], PSTR([format]), [arguments...]);
+ws.printf_P((uint32_t)client_id, PSTR(format), arguments...);
 //printfAll_P to all clients
-ws.printf_P(PSTR([format]), [arguments...]);
+ws.printf_P(PSTR(format), arguments...);
 //send text to a client
-ws.text([client id], [(char*)text]);
-ws.text([client id], [text], [len]);
+ws.text((uint32_t)client_id, (char*)text);
+ws.text((uint32_t)client_id, (uint8_t*)text, (size_t)len);
+//send text from PROGMEM to a client
+ws.text((uint32_t)client_id, PSTR("text"));
 const char flash_text[] PROGMEM = "Text to send"
-ws.text([client id], [PSTR("text")]);
-ws.text([client id], [FPSTR(flash_text)]);
+ws.text((uint32_t)client_id, FPSTR(flash_text));
 //send text to all clients
-ws.textAll([(char*text]);
-ws.textAll([text], [len]);
+ws.textAll((char*)text);
+ws.textAll((uint8_t*)text, (size_t)len);
 //send binary to a client
-ws.binary([client id], [(char*)binary]);
-ws.binary([client id], [binary], [len]);
+ws.binary((uint32_t)client_id, (char*)binary);
+ws.binary((uint32_t)client_id, (uint8_t*)binary, (size_t)len);
+//send binary from PROGMEM to a client
 const uint8_t flash_binary[] PROGMEM = { 0x01, 0x02, 0x03, 0x04 };
-ws.binary([client id], [flash_binary], [len]);
+ws.binary((uint32_t)client_id, flash_binary, 4);
 //send binary to all clients
-ws.binaryAll([(char*binary]);
-ws.binaryAll([binary], [len]);
+ws.binaryAll((char*)binary);
+ws.binaryAll((uint8_t*)binary, (size_t)len);
 
 //client methods
 AsyncWebSocketClient * client;
-//printf to a client
-client->printf([arguments...]);
-//printf_P to a client
-client->printf_P( PSTR([format]), [arguments...]);
-//send text to a client
-client->text([(char*)text]);
-client->text([text], [len]);
+//printf
+client->printf(arguments...);
+//printf_P
+client->printf_P(PSTR(format), arguments...);
+//send text
+client->text((char*)text);
+client->text((uint8_t*)text, (size_t)len);
+//send text from PROGMEM
+client->text(PSTR("text"));
 const char flash_text[] PROGMEM = "Text to send";
-client->text([PSTR("text")]);
-client->text([FPSTR(flash_text)]);
-//send binary to a client
-client->binary([(char*)binary]);
-client->binary([binary], [len]);
+client->text(FPSTR(flash_text));
+//send binary
+client->binary((char*)binary);
+client->binary((uint8_t*)binary, (size_t)len);
+//send binary from PROGMEM
 const uint8_t flash_binary[] PROGMEM = { 0x01, 0x02, 0x03, 0x04 };
-client->binary([flash_binary], [len]);
+client->binary(flash_binary, 4);
 ```
 
 
@@ -595,5 +621,3 @@ void setup(){
 
 void loop(){}
 ```
-
-