chore(deps): update dependency vue-instantsearch to ~1.6.0

This Pull Request updates dependency vue-instantsearch from ~1.5.0 to ~1.6.0

Release Notes

### [`v1.6.0`](https://github.com/algolia/vue-instantsearch/blob/master/CHANGELOG.md#160httpsgithubcomalgoliavue-instantsearchcomparev152v160-2018-05-03) [Compare Source](https://github.com/algolia/vue-instantsearch/compare/v1.5.2...v1.6.0) ##### Features * Update client and helper ([#429](`https://github.com/algolia/vue-instantsearch/issues/429`)) ([c533527](https://github.com/algolia/vue-instantsearch/commit/c533527)) * **search-client:** Add support for Custom Search Clients ([#432](`https://github.com/algolia/vue-instantsearch/issues/432`)) ([c3d35bc](https://github.com/algolia/vue-instantsearch/commit/c3d35bc)) #### [1.5.2](https://github.com/algolia/vue-instantsearch/compare/v1.5.1...v1.5.2) (2018-03-15) ##### Bug Fixes * **RangeInput:** also update footer slot ([#407](`https://github.com/algolia/vue-instantsearch/issues/407`)) ([831de9a](https://github.com/algolia/vue-instantsearch/commit/831de9a)) * **RangeInput:** make the header slot valid ([#406](`https://github.com/algolia/vue-instantsearch/issues/406`)) ([f43f19f](https://github.com/algolia/vue-instantsearch/commit/f43f19f)), closes [#405](`https://github.com/algolia/vue-instantsearch/issues/405`) ##### Features * **store:** expose userData through a new getter ([1d943d4](https://github.com/algolia/vue-instantsearch/commit/1d943d4)) #### [1.5.1](https://github.com/algolia/vue-instantsearch/compare/v1.5.0...v1.5.1) (2018-03-06) ##### Bug Fixes * **refinementList:** avoid unwanted spacing ([#384](`https://github.com/algolia/vue-instantsearch/issues/384`)) ([8d12317](https://github.com/algolia/vue-instantsearch/commit/8d12317)) ---

This PR has been generated by Renovate Bot.

wopian / hibari

chore(deps): update dependency vue-instantsearch to ~1.6.0 #513