title: (C3 js) Load CSV file and also use a time series
body: <p>I'm trying to load local csv file and also use a timeseries. I have lots of data so I'm getting it from csv (url: 'data_testing.csv') but I also want to use a time series with 12 hours interval and the total interval is 5 days. I tried many things but with no luck. It seems like I either have to use data from the same script (not loading a csv) in order to use timeseries. I'm able to load the CSV, but once I add the timeseries, it does not work anymore. I'm also able to use a timeseries but only if the data is from the columns and not from a file load. I need to work both, timeseries + data from CSV file.</p>
  
  <p>C3 version: 0.6.8 - 
  D3 version: 5.7.0 - 
  Browser: Chrome - 
  OS: Mac OSX</p>
  
  <pre><code>var chart = c3.generate({
  bindto: '#chart',
  data: {
      // this only works if I don't use time series
      url: '../data_testing.csv',
      x: 'x',
      // this only works if I'm writing the data and not using local csv file
      xFormat: '%Y-%m-%d',
      columns: [
          ['x', '2016-8-10', '2016-8-10', '2016-8-10', '2016-8-10', '2016-8-10', '2016-8-10']
      ],
      type: 'line'
  
    },
  
  axis: {
      x: {
          type: 'timeseries',
          localtime: false,
          tick: {
              culling: true,
              fit: true,
              culling: {
                  max: window.innerWidth &gt; 700 ? 8 : 5
              },
              format: '%Y-%m-%d' // %H:%M:%S
          }
      },
      y: {
          max: 55,
          min: 6
      }
  }
    });
  
  require(["d3", "c3"], function (d3, c3) {
        c3.generate({
  
     });
    });
  </code></pre>