fix brfs bug, update tests and docs, add example

[ungoldman]

• Renamed "Example Test" to "API Contract", added htmlToElement and getNode.
• Ran fixpack on package.json.

Resolves #1 #3 #5

[ungoldman]

@bcomnes Actually I'm not sure why these extra methods are here:

• htmlElement
• getNode
• rawPath (path to Entypo+)

dat-icons only exposes the svg path -- what's the advantage of exposing these? Asking for the sake of understanding and documenting.

[ungoldman]

Fixed #5, added an example, added icon names to readme, added API documentation to readme.

[ungoldman]

getNode and htmlToElement are useful, I get it now.

Not sure about rawPath though.

If a user wants the entire Entypo+ collection they can just download it.

I think we should exclude it from the package when publishing so users aren't needlessly getting an extra copy of the font collection buried in their node_modules directory.