Update VSCode tasks.json.

Author: microbit-carlos

.vscode/tasks.json

@@ -1,30 +1,26 @@
 {
     // See https://go.microsoft.com/fwlink/?LinkId=733558
     // for the documentation about the tasks.json format
-    "version": "0.1.0",
-    "name": "make",
-    "isShellCommand": true,
-    "showOutput": "always",
-    "problemMatcher": {
-        "owner": "cpp",
-        "fileLocation": ["relative", "${workspaceRoot}/mbed-os"],
-        "pattern": {
-            "regexp": "^(.*):(\\d+):(\\d+):\\s+(warning|error):\\s+(.*)$",
-            "file": 1,
-            "line": 2,
-            "column": 3,
-            "severity": 4,
-            "message": 5
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "mbed",
+            "args": [
+                "compile"
+            ],
+            "problemMatcher": {
+                "owner": "cpp",
+                "fileLocation": ["relative", "${workspaceRoot}/mbed-os"],
+                "pattern": {
+                    "regexp": "^(.*):(\\d+):(\\d+):\\s+(warning|error):\\s+(.*)$",
+                    "file": 1,
+                    "line": 2,
+                    "column": 3,
+                    "severity": 4,
+                    "message": 5
+                }
+            }
         }
-    },
-    "args": ["-j"],
-    "linux": {
-        "command": "make"
-    },
-    "osx": {
-        "command": "make"
-    },
-    "windows": {
-        "command": "make.exe"
-    }
+    ]
 }

README.md

@@ -142,13 +142,6 @@ mbed_app.json:
 ```
 
 
-## Visual Studio Code
-
-At the moment we have the default config files from the Mbed online compiler
-project exporter. These are using removed `make` and have to be updated to use
-`mbed-cli`.
-
-
 ## Using NFC
 
 The Mbed board target created for the micro:bit configures the NFC pins as GPIO