NodeJS Salesforce REST OAuth Username-Password

C.SF ={
	LoginURL : 'https://login.salesforce.com/services/oauth2/token',
	Username : process.env.SF_USERNAME,
	Password : process.env.SF_PASSWORD,
	ClientID : process.env.SF_CLIENTID,
	ClientSecret : process.env.SF_CLIENTSECRET,
}

var options = {
	//http://www.salesforce.com/us/developer/docs/api_rest/index_Left.htm#CSHID=quickstart_oauth.htm|StartTopic=Content%2Fquickstart_oauth.htm|SkinName=webhelp
    url: (C.SF.LoginURL+'?username='+C.SF.Username
    				  +'&password='+encodeURIComponent(C.SF.Password)
    				  +'&client_id='+encodeURIComponent(C.SF.ClientID)
    				  +'&client_secret='+encodeURIComponent(C.SF.ClientSecret)
    				  +'&grant_type=password'),
    headers: {},
    method: 'POST',
};
console.log(options.url);
request(options, function(error, response, body) {
    if(error){
    	console.log(error);
    	return callback(error);
    }
    
    console.log(body);
var token = JSON.parse(body);
return callback(null,token);
    

});