Fix #14 and #15 and adding better basic example with no delay()

[ridercz]

1. Fixed #14
2. Fixed #15
3. Added new example that uses async approach instead of delay() everywhere.

Using delay() everywhere is bad practice and also makes extensibility harder. I rewrote the basic example to use asynchronnous approach instead, so the main lopp is free for other tasks - ie. running a HTTP server or something else.