Updating version to 0.2.0-SNAPSHOT
Updating the Spring configuration, so that TableSetResource is initialized to read from the directory named in the tables.dir field of the table-service.conf file in the user's HOME directory.
Make the table-service.conf file required, rather than optional.
Renamed Table.java to TextFileTable.java
Added a dependency on the javadbf library.
Extracting the Table interface from the TextFileTable class.
Added DBFTable, which reads .dbf files and implements the Table interface.
Added tests for TextFileTable