Work around protected sanitize_sql_array in Rails 4 for now.
Allow jruby failures on Travis CI for now.

There's some issue with the SQL generated by the JDBC adapter.
Merge pull request #87 from brandon-beacher/master

Work around protected sanitize_sql_array in Rails 4 for now.
Add Ruby 2.0.0 and allow failures on Travis CI
Merge pull request #93 from inertialbit/fix-ruby18-compat

use i18n < 0.6.2 or > 0.6.2
Add support for custom search document models.

MultisearchableModels can now optionally declare one or more document
models. Useful e.g. maintaining private and public global search indexes.

Added:
- document model generator w/ optional tsvector column migrations

Updated:
- PgSearch.multisearch('DocClass', query)
  PgSearch.multisearch(query) still delegates to
  PgSearch::Document.search
- MultisearchableModel.multisearchable('DocClass' => opts)
  MultisearchableModel.multisearchable({:against => :col}) still backed by
  PgSearch::Document
- PgSearch::Multisearch.rebuild(MultisearchableModel, clean_up, DocumentModel)
  PgSearch::Multisearch.rebuild(MultisearchableModel) rebuilds all document models
- PgSearch::Rebuilder.new(MultisearchableModel, time_source, DocumentModel)
  PgSearch::Rebuilder.new(MultisearchableModel) rebuilds all document
  models
Merge branch 'master' into multi-multisearch