Updated Algolia's API client to its latest version

Includes new features, improvements and bug fixes

CHANGELOG

2014-12-09  2.8.1
    * Enabled DSN by default (is working even if only one datacenter is selected)

2014-11-28  2.8.0
    * Move to algolia.net by default

2014-11-25  2.7.5
    * Expose one option to select the TTL (prepare migration to .net, allow to gain some milliseconds compared to .io)

2014-11-12  2.7.4
    * Expose more options (jsonp & requestTimeoutInMs)
    * Change the way the JSONP fallback works

2014-10-29  2.7.3
  * Reintroduced Algolia Custom Headers (X-Algolia-*) on queries. It was removed to try to remove the CORS OPTIONS query but this has no impact because this is a POST action.

2014-10-27  2.7.2
  * Fixed browse method (author @muertet)

2014-10-15  2.7.{0,1}
  * Refactor the AlgoliaSearch constructor to allows optional/named arguments

2014-10-07  2.6.6
  * Fixed bower integration

2014-09-26  2.6.5
  * Optimize disjunctive queries that were retrieving useless attributes

2014-09-23  2.6.4
   * Fixed CORS handling issue on IE8/IE9

2014-09-23  2.6.3
   * Fixed IE11-based AJAX calls

2014-09-20  2.6.2
   * Updated package manager description files: npm and jsdelivr

2014-09-20  2.6.1
   * Fixed JSONP call: 'X-Algolia-TagFilters' and 'X-Algolia-UserToken' were not included in the URL.
  
2014-09-06  2.6.0
   * Improved retry strategy with implementation of a timeout on network call.
     Upgrade to this version is highly recommended
	
2014-09-04  2.5.4
    * Removed the OPTIONS request for the first isalive query of for all search queries

2014-07-23  2.5.3
    * AlgoliaSearchHelper: add missing getIndex/setIndex
    * listIndexes is now paginable

2014-06-05  2.5.2
    * AlgoliaSearchHelper: add getter/setter methods

2014-05-14  2.5.1
    * Fixed listIndexes call (trailing slash not compatible with our API anymore)

2014-05-09  2.5.0
    * If CORS is not available, use JSONP

2014-04-23  2.4.7
     * Ability to instantiate multiple AlgoliaSearchHelper