US Street Abbreviations

Turns a US street address into a unique set of strings with various standard US postal street keywords abbreviated.

Installation:

``bash
npm install --save us-street-abbrevations
`

Usage:

`javascript
const X = import * from 'us-street-abbreviations';
X.getVariants('123 North Northeast Street');
`

Set DEBUG environment variable to true to enable debugging messages.

Expected result:

`javascript
{
'123 north northeast street',
'123 n northeast street',
'123 n ne street',
'123 n ne st',
'123 north ne street',
'123 north ne st',
'123 north northeast st',
}
``

TODO:

* Allow for expansions (exchange w/arrays swapped)
* Write tests