Update README.md

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Carla 2015-10-30 11:04:27 +01:00
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@ -119,7 +119,7 @@ SELECT (geocode_postalcode_points(Array['03204'],Array['ESP'])).*
2. Georeference the table using field11 as longitude and field10 as latitude in order to construct the_geom.
3. Add column iso3 (text) and run sql/build_zipcode_points_table.sql.
3. Add column `iso3 (text)` and run `sql/build_zipcode_points_table.sql`.
**Alternative manual process for importing and preprocessing**
@ -173,6 +173,7 @@ Import the file ignoring step 2.
![Map](https://camo.githubusercontent.com/483eae203445096ffa8bf0fe3d92a99fd9367a01/68747470733a2f2f646c2e64726f70626f7875736572636f6e74656e742e636f6d2f752f323837393330382f53637265656e25323053686f74253230323031352d30362d3239253230617425323031342e30332e34342e706e67)
# Known issues:
* The name of the countries added in a column are not being sanitized https://github.com/CartoDB/cartodb/issues/3392
* Incorrect table usage for polygons and free text https://github.com/CartoDB/data-services/issues/173
# Known deficiencies of the service
* For the USA polygon zipcode service, Zipcode Tabulation Areas (ZCTA) are being used which [don't correspond to actual zipcode regions](http://web.archive.org/web/20050209030255/http://www.manifold.net/cases/zip_codes/zip_codes.html).