Edit in JSFiddle

FusionCharts.ready(function() {
  var socialMediaPlan = new FusionCharts({
    type: 'gantt',
    renderAt: 'chart-container',
    width: '550',
    height: '380',
    dataFormat: 'json',
    dataSource: {
      "chart": {
        "dateformat": "mm/dd/yyyy",
        "caption": "Project Timeline",
        "subcaption": "for 2017",
        "theme": "fusion",
        "canvasBorderAlpha": "40"
      },
      "categories": [{
        "category": [{
            "start": "01/01/2017",
            "end": "01/31/2017",
            "label": "January"
          },
          {
            "start": "02/01/2017",
            "end": "02/28/2017",
            "label": "Febuary"
          },
          {
           "start": "03/01/2017",
            "end": "03/31/2017",
            "label": "March"
          },
          {
            "start": "04/01/2017",
            "end": "04/30/2017",
            "label": "April"
          },
          {
            "start": "05/01/2017",
            "end": "05/31/2017",
            "label": "May"
          }
          
        ]
      }],
      "processes": {
        "fontsize": "12",
        "isbold": "1",
        "align": "right",
        "process": [{
            "label": "Market Analysis"
          },
          {
            "label": "Feasibility"
          },
          {
            "label": "Rough Prototype"
          },
          {
            "label": "Cost Estimation"
          },
          {
            "label": "Architecture"
          },
          {
            "label": "Sub-system"
          },
          {
            "label": "Refine design"
          },
          {
            "label": "Make Buy Analysis"
          },
          {
            "label": "Complete definition"
          },
          {
            "label": "Materials"
          },
          {
            "label": "Tooling"
          },
          {
            "label": "Quality control Definition "
          }
        ]
      },
      "tasks": {
        "task": [{
            "start": "01/01/2017",
            "end": "01/14/2017",
            "color":"#0000FF"
          },
          {
            "start": "01/14/2017",
            "end": "02/10/2017",
            "color":"#0000FF"
          },
          {
            
            "start": "02/10/2017",
            "end": "02/26/2017",
            "color":"#0000FF"
          },
          {
            "start": "01/13/2017",
            "end": "02/28/2017",
            "color":"#0000FF"
          },
          {
            "start": "02/2/2017",
            "end": "02/17/2017",
            "color":"#FF0000"
          },
          {
            "start": "02/8/2017",
            "end": "02/23/2017",
            "color":"#FF0000"
          },
          {
            "start": "02/23/2017",
            "end": "03/7/2017",
            "color":"#FF0000"
          },
          {
            "start": "03/9/2017",
            "end": "03/17/2017",
            "color":"#FF0000"
          },
          {
            "start": "03/17/2017",
            "end": "04/14/2017",
            "color":"#00FF00"
          },
          {
            "start": "04/14/2017",
            "end": "04/29/2017",
            "color":"#00FF00"
          },
          {
            "start": "04/29/2017",
            "end": "05/11/2017",
            "color":"#00FF00"
          },
          {
            "start": "05/11/2017",
            "end": "05/17/2017",
            "color":"#00FF00"
          }
        ]
      }

    }
  }).render();
});
<!-- A simple Gantt chart -->
<div id="chart-container">FusionCharts will render here</div>