title: ogr2ogr from MIF/MID to GeoJSON
body: <p>I'm trying to convert a .mif file to GeoJSON. I've got .mif, .mid and .dbf. But when I convert it, the properties included in .dbf are not rendered in the GeoJson file. The command I use is : <code>ogr2ogr -f GeoJSON file.json file.mif</code>.</p>
  
  <p>Is there something wrong with my command or do I need to add an option?</p>
  
  <p><strong>More infos:</strong></p>
  
  <p>With <code>ogrinfo</code> for the .dbf file :</p>
  
  <pre><code>ogrinfo car_m.dbf -so car_m
  INFO: Open of `car_m.dbf'
        using driver `ESRI Shapefile' successful.
  
  Layer name: car_m
  Metadata:
    DBF_DATE_LAST_UPDATE=1913-10-18
  Geometry: None
  Feature Count: 2278213
  Layer SRS WKT:
  (unknown)
  id: String (21.0)
  idINSPIRE: String (30.0)
  idk: String (25.0)
  ind_c: Real (16.4)
  nbcar: Real (16.4)
  </code></pre>
  
  <p>And from .mid :</p>
  
  <pre><code>Geometry: Unknown (any)
  Feature Count: 2278213
  Extent: (48385.790000, 1620790.500000) - (1197778.210000, 2676806.350000)
  Layer SRS WKT:
  PROJCS["unnamed",
      GEOGCS["unnamed",...]
  
  idINSPIRE: String (30.0)
  id: String (21.0)
  </code></pre>