fixing #753
Merge branch 'develop' of https://github.com/TruffleMuffin/elasticsearch-net into TruffleMuffin-develop

Conflicts:
	src/Tests/Nest.Tests.MockData/Domain/ElasticsearchProject.cs
	src/Tests/Nest.Tests.Unit/Search/SearchOptions/SearchOptionTests.cs
Merge branch 'TruffleMuffin-develop' into develop