New LED flasher example

• New: A new example is included. It's a program that makes LED to flash synchronously in NTP synchronised boards
• Add platformio ini files to examples
• Bugfix: Sync event was not thrown under certain circunstances

Bug fix

• BugFix: response handler was not registered if begin() was called before WiFi is connected.
• New feature: New event structure to give more detailed context information

First release

0.0.2