Example Multiple Term Aggregations added

Also know as Facets
Merge branch 'master' into multiple-term-facets
Merge pull request #16 from eddiejaoude/multiple-term-facets

Multiple term facets
Forced Refresh docs in single & separate query
PHP Example of Forced Refresh
Added separate Query example too
Merge pull request #17 from eddiejaoude/runtime-parameters

Runtime parameters
Update LICENSE
Merge pull request #18 from TransformCore/Change-copyright-owner

Update LICENSE
Merge remote-tracking branch 'upstream/master'