Adds a baretext field to the module fulltext index table.
Storing the baretext, which is used by the index, enables us to provide highlighted snippets for search queries without doing the transform each query.
Provides schema functions and triggers for fulltext indexing.
Adds useful object representation code.
Adds a test for fulltext search and fulltext indexing test data.
Updates the travis-ci build commands to include plxslt.
Updates the readme with more detailed database install instructions.