Merge pull request #3 from rjw57/patch-1

Add simple README with licence and copyright info

Author: portableant

README.md

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+# GeoJSON administrative boundary line dataset
+
+This repository contains the full hierarchy of local government administrative and electoral boundaries in
+Great Britain in GeoJSON format. It's used within instances of the
+[finds.org.uk database software](https://github.com/findsorguk/findsorguk) to provide data for mapping.
+
+## Provenance
+
+The data is sourced from the
+[Boundary-Line](https://www.ordnancesurvey.co.uk/business-and-government/products/boundary-line.html)
+dataset provided by the [Ordnance Survey](https://www.ordnancesurvey.co.uk/).
+
+## Re-creating
+
+The [scripts](scripts) directory contains the original scripts used to convert the data.
+
+## Copyright and Licensing
+
+The original data was released under the [Open Government Licence](http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/).
+Contains Ordnance Survey data © Crown copyright and database right 2016.