Use path.join instead of ghetto separator check
Removing svgo + pngcrush dependencies

I’d rather let homebrew manage my binaries.
README is now 500% better
phantomjs dependency removed

- phantomjs removed from requirements
- path to existing install can be set
default loadersnippet extension changed
Logged output got a makeover
Happy new year.
Added a talking unicorn.
Spaces --> tabs, minor README update