Add readme

README.md

+# WikiData Geo Mapper
+
+Look up entities found by [TAGME] in Wikidata and extract geographical information.
+
+## Usage
+
+Compile using Maven:
+
+    mvn package
+
+Run as:
+
+    java -jar target/wikidata-geo-mapping-0.0.1-SNAPSHOT-jar-with-dependencies.jar *.csv
+
+where `*.csv` are the output files produced by TAGME. This will produce one new file per input file, e.g. for `0.html_annotations.csv` this will create `0.html_annotations-geo.csv`.
+
+
+## License
+
+Copyright 2016 Gerhard Gossen. This program may be used under the Apache License 2.0.
+
+
+
+[TAGME]: https://tagme.d4science.org/tagme/