LineString and Nodes map

[pecet86]

I added support LineString and mapping nodes (not to repeat with the same coordinates)

check:
`
osm_geojson.geojson2osm = function (geo, changeset, osmChange) {
var nodes_map = {};

function togeojson(geo, properties) {
	var nodes = '',
	ways = '',
	relations = '';
	properties = properties || {};

	switch (geo.type) {
	case 'Point':
		var coord = roundCoords([geo.coordinates]);
		nodes += '<node id="' + count + '" lat="' + coord[0][1] +
		'" lon="' + coord[0][0] + '" changeset="' + changeset + '">';
		nodes += propertiesToTags(properties);
		nodes += '</node>';
		
		nodes_map[coord[0]] = count;
		
		count--;
		break;

	case 'MultiPoint':
		break;
	case 'LineString':
		append(lines(geo, properties));
		break;
	...
}

function lines(geo, properties) {
	var nodes = '',
	ways = '';
	properties = properties || {};
	
	var coords = [];
	ways += '<way id="' + count + '" changeset="' + changeset + '">';
	count--;
	for (var j = 0; j < geo.coordinates.length - 1; j++) {
		coords.push([geo.coordinates[j][1], geo.coordinates[j][0]]);
	}
	coords = createNodes(coords);
	nodes += coords.nodes;
	ways += coords.nds;
	ways += propertiesToTags(properties);
	ways += '</way>';

	return {
		nodes : nodes,
		ways : ways,
		relations : ''
	};
}

...

function arraysEqual(a, b) {
	if (a === b)
		return true;
	if (a == null || b == null)
		return false;
	if (a.length != b.length)
		return false;

	// If you don't care about the order of the elements inside
	// the array, you should sort both arrays here.

	for (var i = 0; i < a.length; ++i) {
		if (a[i] !== b[i])
			return false;
	}
	return true;
}

function createNodes(coords) {
	var nds = '',
	nodes = '',
	length = coords.length;

	coords = roundCoords(coords);
	
	var repeatLastND = false;
	if(length > 2){
		repeatLastND = arraysEqual(coords[0], coords[length-1]);
	}

	for (var a = 0; a < length; a++) {
		var tempCoords = count;
		var coordsInMap = coords[a] in nodes_map;
		if(coordsInMap){
			tempCoords = nodes_map[coords[a]];
		}else{
			nodes_map[coords[a]] = count;
		}
		
		if (repeatLastND && a === 0)
			repeatLastND = tempCoords;

		nds += '<nd ref="' + tempCoords + '"/>';
		if (repeatLastND && a === length - 1) nds += '<nd ref="' + repeatLastND + '"/>';
		if(!coordsInMap){
			nodes += '<node id="' + tempCoords + '" lat="' + coords[a][0] + '" lon="' + coords[a][1] +'" changeset="' + changeset + '"/>';
			count--;
		}
	}
	return {
		'nds' : nds,
		'nodes' : nodes
	};
}

...

};
`

[vignesh882]

for loop in lines function should be

for (var j = 0; j < geo.coordinates.length; j++) {

Thanks