Support for windows and more options passed to the reporter

Updated to the latest node-notifier, adding support for Windows.

Other changes:

• The entire options-object is passed to the notifier, allowing pass additional information to notifiers.
• Adds support for showing errors returned from the notifiers and showing these errors in the console.

Beta release with stable API

Locking down on API and if no apparent errors are found, this will be the first stable release.

Lates changes since initial release

• Major rewrites and restructure in code
• Lock down on API, changes setLogLevel to logLevel
• Exposes logLevel and logger on the withReporter object.
• Adds another logging level: 0 - none, 1 - error, 2 - all.
• Added .onError method on object created by withReporter
• Added colored logging on success / error
• Added API end point notify.withReporter(Reporter) as syntactic suger for custom reporter
• Updated dependency for node-notfier - now checking if notify-send is installed on the Linux box