fix some typos

Author: Martín González

README.md

@@ -3,9 +3,9 @@ bcn-geodata
 The official shapefiles from Barcelona, converted to GeoJSON and TopoJSON for making your life easier.
 
 ## Recreate the files
-- Go to the [CartoBCN](http://w20.bcn.cat/cartobcn/) website and make an account. After that, to click on `Catàleg` and select the SHP we are going to use, `ED50. DIVISIONS ADMINISTRATIVES en format CAD/SHP/KMZ`.
+- Go to the [CartoBCN](http://w20.bcn.cat/cartobcn/) website and make an account. After that, click on `Catàleg` and select the SHP we are going to use, `ED50. DIVISIONS ADMINISTRATIVES en format CAD/SHP/KMZ` in this case.
 
-- Extract the zip and extract the `BCN_DIVADM_ED50_SHP.ZIP` zip again. We have five different files, first, the basic statistic area, then `Àrea d'interès`, which is an area important for statistic purposes (covers zones that are useful for calculating stuff), after that the neighbourhoods, the districts and the census area. We will first convert the shapefiles to GeoJSON, using the `ogr2ogr` tool. [A good tutorial](http://ben.balter.com/2013/06/26/how-to-convert-shapefiles-to-geojson-for-use-on-github/) if you don't know what I'm talking about. Let's go!
+- Extract the zip and the `BCN_DIVADM_ED50_SHP.ZIP` file again. We have five different files. First, the basic statistic area, then `Àrea d'interès`, which is an area important for statistic purposes (but it covers only Montjuïc), after that the neighbourhoods, the districts and the census area. We will first convert the shapefiles to GeoJSON, using the `ogr2ogr` tool. [A good tutorial](http://ben.balter.com/2013/06/26/how-to-convert-shapefiles-to-geojson-for-use-on-github/) if you don't know what I'm talking about. Let's go!
 
 ```bash
 ogr2ogr -f GeoJSON \
@@ -22,8 +22,10 @@ topojson -o output.topo.json \
 NAME_OF_YOUR.geojson \
 -p barri=N_Barri,codi=C_Barri
 ```
-In this case I'm using the BCN_Barri_ED50_SHP.shp file. Using the `p` option I tell TopoJSON to preserve the name of the neighbourhood and its code, and rename them to `nom` and `codi`. You can adapt this to your needs looking at the GeoJSON properties of each file.
+In this case I'm using the BCN_Barri_ED50_SHP.shp file. Using the `-p` option I tell TopoJSON to preserve the name of the neighbourhood and its code, and rename them to `barri` and `codi`. You can adapt this to your needs looking at the GeoJSON properties for each file.
 
-Congrats! Now you have a set of TopoJSONs ready to visualize! Look at [their command line reference](https://github.com/mbostock/topojson/wiki/Command-Line-Reference) for more powerful options.
+----
+
+Congrats! Now you have a set of TopoJSONs ready to visualize! Look at [the TopoJSON command line reference](https://github.com/mbostock/topojson/wiki/Command-Line-Reference) for more powerful options.
 
 Source: Ajuntament de Barcelona / [CartoBCN](http://w20.bcn.cat/cartobcn/). License: CC-BY.