Started work on a guide for contributing
Update INSTALL.rst

Fresh Vagrant boxes don't have Java installed
Invalid JSON fixed
Some updates to the readme
Merge branch 'master' of https://github.com/openstate/open-cultuur-data
Don't index offsets
Update INSTALL.rst

New ES version
The provided source config can be a file, so don't try to open it again
Whitespaces, because PEP
Similar documents endpoint
Merge branch 'master' of https://github.com/openstate/open-cultuur-data
Changed endpoint to reflect search endpoint idea better
Documentation for similar documents endpoint
URL patterns according to methods-within-context
Create and store resolveable urls
Merge branch 'master' of https://github.com/openstate/open-cultuur-data
Context
Merge branch 'master' of https://github.com/openstate/open-cultuur-data
Update README.md

Typo
Added licence to docs