ipaddr-buffer

This is a tiny shim over ipaddr.js providing
some convenience features as well as helpers for Node.js Buffers. This means it is
more suitable for Node.js deployments.

It should work as a drop in replacement for ipaddr.js, as it is only extending it with
the following methods:
- fromBuffer(data, [endianness])
- .toBuffer()
- fromArray(data, [endianness])
- .toArray()
- fromNumber(number) [IPv4 only]
- .toNumber() [IPv4 only]
- tryParse(data, [endianness])

All Array and Buffer methods accept an optional endianness parameter, either
be (MSB, default, also called network byte order) or le (LSB).

The tryParse method is a bit trickier as it will try to decide what is the input and
parse appropriately. It should support input in the format of Number, String,
Array and Buffer. It defaults to considering the input an Array-compatible type.

Examples:

``js
var ipaddr = require('ipaddr-buffer')

// return an ipaddr object
ipaddr.fromArray([0x7f, 0, 0, 1]) // defaults to 'be' (MSB, network byteorder)
ipaddr.fromArray([1, 0, 0, 0x7f], 'le')
ipaddr.fromBuffer(new Buffer('7f000001', 'hex'))
ipaddr.fromNumber(0x7f000001)
ipaddr.tryParse('127.0.0.1')
ipaddr.tryParse(0x7f000001)
``