enable automated GloBI review and indexing

[jhpoelen]

to enable automated GloBI review (via travis-ci.com) and indexing (via globalbioticinteractions.org) the following need to happen:

• [x] (Jorrit) add globi.json
  • [x] (Jorrit) release elton version with preliminary Pensoft interaction table support.
  • [x] (Mariya) make https://github.com/pensoft/pensoft-interaction-tables public
  • [x] add .travis.yml to configure review process
  • [x] (Mariya) enable travis integration for this repository (see https://docs.travis-ci.com/user/tutorial/)

[jhpoelen]

Closing completed issue.