README: more detailed RESP description (site update)

README.md

@@ -295,7 +295,30 @@ with that response (or `NULL` if there was an error).
 ### RESP data type
 
 All responses coming from the Redis server are represented by a dynamically allocated `RESP` type (defined in 
-`redisx.h`) structure. Each `RESP` has a type (e.g. `RESP_SIMPLE_STRING`), an integer value `n`, and a `value` pointer
+`redisx.h`) structure. 
+
+```c
+typedef struct RESP {
+  char type;                    // RESP type: RESP_ARRAY, RESP_INT ...
+  int n;                        // Either the integer value of a RESP_INT response, or the 
+                                // dimension of the value field.
+  void *value;                  // Pointer to text (char *) content or to an array of components 
+                                // (RESP **)
+} RESP;
+```
+
+whose contents are:
+
+ | RESP `type`             | Redis ID | `n`                           |`value` cast in C      |
+ |-------------------------|----------|-------------------------------|-----------------------|
+ | `RESP_ARRAY`            |   `*`    | number of `RESP *` pointers   | `(RESP **)`           |
+ | `RESP_INT`              |   `:`    | integer return value          | `(void)`              |
+ | `RESP_SIMPLE_STRING`    |   `+`    | string length                 | `(char *)`            |
+ | `RESP_ERROR`            |   `-`    | string length                 | `(char *)`            |
+ | `RESP_BULK_STRING`      |   `$`    | string length or -1 if `NULL` | `(char *)`            |
+
+
+Each `RESP` has a type (e.g. `RESP_SIMPLE_STRING`), an integer value `n`, and a `value` pointer
 to further data. If the type is `RESP_INT`, then `n` represents the actual return value (and the `value` pointer is
 not used). For string type values `n` is the number of characters in the string `value` (not including termination), 
 while for `RESP_ARRAY` types the `value` is a pointer to an embedded `RESP` array and `n` is the number of elements 

include/redisx.h

@@ -120,8 +120,8 @@ enum redisx_channel {
  * \sa redisxDestroyRESP()
  */
 typedef struct RESP {
-  char type;                    ///< RESP_ARRAY, RESP_INT ...
-  int n;                       ///< Either the integer value of a RESP_INT response, or the dimension of
+  char type;                    ///< value type RESP_ARRAY, RESP_INT ...
+  int n;                        ///< Either the integer value of a RESP_INT response, or the dimension of
                                 ///< the value field.
   void *value;                  ///< Pointer to text (char *) content to an array of components (RESP**)...
 } RESP;