Add information about license, examples and version to @platformio Library Registry manifest file (#26)

Signed-off-by: Roman3349 <[email protected]>

Author: Roman3349

library.json

@@ -12,6 +12,11 @@
     "type": "git",
     "url": "https://github.com/me-no-dev/ESPAsyncTCP.git"
   },
+  "version": "1.0.0",
+  "license": "LGPL-3.0",
   "frameworks": "arduino",
-  "platforms":"espressif"
+  "platforms":"espressif",
+  "examples": [
+    "examples/*/*.ino"
+  ]
 }