message: Corrected name of an area and fixed major grammatical errors
diff: @@ -1471,7 +1471,7 @@ List of Countries
  +-------+------------------------------+
  |GB-MRY | Moray |
  +-------+------------------------------+
  -|GB-NAY | North Ayshire |
  +|GB-NAY | North Ayrshire |
  +-------+------------------------------+
  |GB-NLK | North Lanarkshire |
  +-------+------------------------------+
  @@ -1712,23 +1712,23 @@ List of Countries
  +------+------------------------------+
  -You need to add a new Country ?
  +Need to add a new Country?
  -------------------------------
  -To add a new country in country map tools, we need follow next steps :
  +To add a new country in country map tools, we need to follow the following steps :
  -1. You need shapfiles why contains data of your map.
  - You can get this file in this site : http://www.diva-gis.org/gdata
  +1. You need shapefiles which contain data of your map.
  + You can get this file on this site: http://www.diva-gis.org/gdata
  2. You need to add ISO 3166-2 with column name ISO for all record in your file.
  - It's important because, it's a norm for mapping your data with geojson file
  + It's important because it's a norm for mapping your data with geojson file
  -3. You need to convert shapfile to geojson file.
  +3. You need to convert shapefile to geojson file.
  This action can make with ogr2ogr tools: http://www.gdal.org/ogr2ogr.html
  4. Put your geojson file in next folder : superset/assets/visualizations/countries with the next name : nameofyourcountries.geojson
  -5. You can to reduce size of geojson file ont this site : http://mapshaper.org/
  +5. You can to reduce size of geojson file on this site: http://mapshaper.org/
  6. Go in file superset/assets/javascripts/explorev2/stores/controls.jsx
  