Merge branch 'issue-9-LatLong-meta-data'

simpleexample2/core/src/main/java/simpleex/core/LatLong.java

...leexample2/core/src/main/java/simpleex/core/MetaData.java

simpleexample2/core/src/main/java/simpleex/core/README.md

...core/src/main/java/simpleex/json/LatLongDeserializer.java

...2/core/src/main/java/simpleex/json/LatLongSerializer.java

...xample2/core/src/test/java/simpleex/core/LatLongTest.java

...ample2/core/src/test/java/simpleex/core/MetaDataTest.java

...e2/core/src/test/java/simpleex/json/LatLongsJsonTest.java