UCS-2 (ISO/IEC 10646-1:1993, UCS-2) version of `readStr`. UCS-2 is the fixed-width two-byte subset of Unicode that can only express values inside the Basic Multilingual Plane (BMP). Note that this method is generally unsuitable for parsing non-trivial UTF-16 strings which may contain surrogate pairs. [This is only marginally related though as, according to ID3v2, all Unicode strings should be UCS-2.] Further info:  * [How to convert ArrayBuffer to and from String](http://updates.html5rocks.com/2012/06/How-to-convert-ArrayBuffer-to-and-from-String) * [The encoding spec](http://encoding.spec.whatwg.org/) * [stringencoding shim](https://code.google.com/p/stringencoding/)  About the BOM: The current implementation will check for and remove the leading BOM from the given view to avoid invisible characters that mess up the resulting strings. MDN's documentation for [fromCharCode](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/String/fromCharCode) suggests that it can correctly convert UCS-2 buffers to strings. And indeed, tests performed with UCS-2 LE encoded frames indicate that it does. However, no tests have been made for UCS-2 BE. (Kid3, the ID3v2 Tag generator used for tests at the time of this writing, goes totally weird when switched to BE)
function (view, offset, length) {
            // Tweak offset to remove the BOM (LE: FF FE / BE: FE FF)
            if (view.getUint16(offset) === 0xFFFE || view.getUint16(offset) === 0xFEFF) {
                offset += 2;
                length -= 2;
            }

            var buffer = view.buffer;

            // When offset happens to be an even number of octets, the array-buffer may be wrapped
            //  in a Uint16Array. In the event that it's _not_, an actual copy has to be made
            // (Note that Node <= 0.8 as well as IE <= 10 lack an ArrayBuffer#slice. TODO: shim it)
            if (offset % 2 === 1) {
                buffer = buffer.slice(offset, offset + length);
                offset = 0;
            }

            return String.fromCharCode.apply(null, new Uint16Array(buffer, offset, length / 2));
        }