function isSet( value, i ) {
	return Boolean( ( value >> i ) & 1 );
}
Checks whether a bit is set.

@private
@param {integer32} value - integer value
@param {NonNegativeInteger} i - bit to check
@returns {boolean} boolean indicating whether a bit is set

@example
var bool = isSet( 4, 2 );
// returns true

bool = isSet( 4, 0 );
// returns false