Sample method to get the URL for the mock backend provided by sinatra and calasmash

sample.m

+ (NSURL *)calabashAPIURL
{
    NSString *apiURLString = nil;

    NSString *plistPath = [[NSBundle mainBundle] pathForResource:@"server_config" ofType:@"plist"];
    NSDictionary *serverConfig = [NSDictionary dictionaryWithContentsOfFile:plistPath];

    NSString *urlString = [serverConfig objectForKey:(NSString *)kURLPreference];

    if(urlString.length > 0)
    {
        if(![urlString hasPrefix:@"http://"])
        {
            apiURLString = [NSString stringWithFormat:@"http://%@", urlString];
        }
        else
        {
            apiURLString = urlString;
        }

        NSString *portString = [serverConfig objectForKey:(NSString *)kPortPreference];

        if(portString)
        {
            apiURLString = [apiURLString stringByAppendingString:[NSString stringWithFormat:@":%@",portString]];
        }
    }

    return [NSURL URLWithString:apiURLString];
}