Correct the documentation

- Fix some style issue, typos, and examples
- Follow the variable naming conventions
- Fix tables both in the project and on the webpage

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

docs/03.API-EXAMPLE.md

@@ -9,14 +9,14 @@ This guide is intended to introduce you to JerryScript embedding API through cre
 #include "jerry-api.h"
 
 int
-main (int argc, char * argv[])
+main (int argc, char *argv[])
 {
   const jerry_char_t script[] = "print ('Hello, World!');";
   size_t script_size = strlen ((const char *) script);
 
   bool ret_value = jerry_run_simple (script, script_size, JERRY_INIT_EMPTY);
 
-  return (ret_value ? 1 : 0);
+  return (ret_value ? 0 : 1);
 }
 ```
 
@@ -41,7 +41,7 @@ Here we perform the same actions, as `jerry_run_simple`, while splitting into se
 #include "jerry-api.h"
 
 int
-main (int argc, char * argv[])
+main (int argc, char *argv[])
 {
   const jerry_char_t script[] = "print ('Hello, World!');";
   size_t script_size = strlen ((const char *) script);
@@ -80,7 +80,7 @@ Our code is more complex now, but it introduces possibilities to interact with J
 #include "jerry-api.h"
 
 int
-main (int argc, char * argv[])
+main (int argc, char *argv[])
 {
   const jerry_char_t script_1[] = "var s = 'Hello, World!';";
   const jerry_char_t script_2[] = "print (s);";
@@ -122,7 +122,7 @@ This way, we execute two independent script parts in one execution environment.
 #include "jerry-api.h"
 
 int
-main (int argc, char * argv[]) {
+main (int argc, char *argv[]) {
   const jerry_char_t str[] = "Hello, World!";
   const jerry_char_t script[] = "print (s);";
 
@@ -214,6 +214,7 @@ print_value (const jerry_value_t value)
     jerry_char_t str_buf_p[req_sz];
 
     jerry_string_to_char_buffer (value, str_buf_p, req_sz);
+    str_buf_p[req_sz] = '\0';
 
     jerry_port_console ("%s", (const char *) str_buf_p);
   }
@@ -248,10 +249,10 @@ Shell operation can be described with the following loop:
 #include "jerry-api.h"
 #include "jerry-port.h"
 
-static void print_value (const jerry_api_value_t);
+static void print_value (const jerry_value_t);
 
 int
-main (int argc, char * argv[])
+main (int argc, char *argv[])
 {
   bool is_done = false;
 
@@ -260,7 +261,7 @@ main (int argc, char * argv[])
 
   while (!is_done)
   {
-    char cmd [256];
+    char cmd[256] = {};
     char *cmd_tail = cmd;
     size_t len = 0;
 
@@ -283,6 +284,12 @@ main (int argc, char * argv[])
       len++;
     }
 
+    /* If the command is "quit", break the loop */
+    if (!strncmp (cmd, "quit\n", strlen ("quit\n")))
+    {
+      break;
+    }
+
     jerry_value_t ret_val;
 
     /* Evaluate entered command */
@@ -337,7 +344,7 @@ get_msg_handler (const jerry_value_t func_value, /**< function object */
 } /* get_msg_handler */
 
 int
-main (int argc, char * argv[])
+main (int argc, char *argv[])
 {
   /* Initialize engine */
   jerry_init (JERRY_INIT_EMPTY);
@@ -439,7 +446,7 @@ add_handler (const jerry_value_t func_value, /**< function object */
 } /* add_handler */
 
 int
-main (int argc, char * argv[])
+main (int argc, char *argv[])
 {
   /* Initialize engine */
   jerry_init (JERRY_INIT_EMPTY);
@@ -505,4 +512,4 @@ Value of x is 17
 
 ## Further steps
 
-For further API description, please visit [API Reference page](https://samsung.github.io/jerryscript/API/) on [JerryScript home page](https://samsung.github.io/jerryscript/).
+For further API description, please visit [API Reference page](https://samsung.github.io/jerryscript/api-reference/) on [JerryScript home page](https://samsung.github.io/jerryscript/).