Readme: shorter npm Github install
Readme: Minor edits in intro and Requirements
Readme: added `watching` event
Readme: describe the `fail` events
Readme: not all fails have a `fileObject`
Package: version 1.1.0

* Make sure copy destination exists
* Catch uncaught exceptions
* Improved error handling
* Replaced for..in loop with iteration
* New: event `watching`
* New: fail event `watch error`
* New: fail event `mkdir failed`