First version

This is the first version of the SwiftElasticSearch library and thus makes a base for the project. Currently, following basic methods are added in the library to test it:

1. index - To post the data
2. get - To fetch the data
3. delete - To delete the data (if present)
4. update - To update the data using unique ID (if exists)

It also contains some extra classes like Authenticate and Errors which will be wired up in the upcoming release