Consider instantiating bm25fIMS when setting module.exports

[prtksxna]

Like express (HTTP server), and unlike other wink libraries, bm25 needs to be instantiated before using.

Express

var express = require('express');
var app = express();

NBC

var bm25 = require( 'wink-bm25-text-search' )();

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In our source code, could we:

module.exports = bm25fIMS();

The function doesn't have any arguments so there aren't two ways of doing this any way.

[sanjayaksaxena]

It is required to aid user if s/he needs more than one instance; plus in future it may accept arguments for some additional behavior. In the example require( 'wink-bm25-text-search' )() is a shortcut!

[prtksxna]

I have a feeling that someone might miss the extra () (while writing their own code), we should at least split it in two lines, like in the case of express.

[sanjayaksaxena]

Updated clearly in the example section of README.