Update the webpage (#1785)

* Add the document of coding standard
 * Fix invalid links
 * Update the content

JerryScript-DCO-1.0-Signed-off-by: Zsolt Borbély zsborbely.u-szeged@partner.samsung.com

03.API-EXAMPLE.md

@@ -186,7 +186,7 @@ The following example function will output a JavaScript value:
 #include <string.h>
 
 #include "jerryscript.h"
-#include "jerry-port.h"
+#include "jerryscript-port.h"
 
 static void
 print_value (const jerry_value_t value)
@@ -256,7 +256,7 @@ Shell operation can be described with the following loop:
 #include <string.h>
 
 #include "jerryscript.h"
-#include "jerry-port.h"
+#include "jerryscript-port.h"
 
 static void print_value (const jerry_value_t);