Improve logging:

* color URLs and notices labels
Emit verbose messages in grey color
package.json cleanup
phantomas entry point cleanup
Merge branch 'master' into issue-26-logging-improved
formatter core module cleanup
Improve logging

* add support for --log parameter
* add logger core module
* log phantomas installation directory
logger: minor change
Update README
Merge pull request #31 from macbre/issue-26-logging-improved

Improve logging