Use parent in views.

This could be used for example to set something like:

    "script": "ctx._parent = \"my-parent\""
Add scripts for views.

Using script_view, you can make some scripting base on the view result.
For example, you can do something like:

    "script_view": "view._parent = view.myparent"

to fill the _parent field using the variable myparent from the view.
Correct support for deletion of records in views.

The deletion code wasn't calling the processingView() when in view mode.
Update documentation with script_view parameter.
Refactoring processingView.

Now, the tow action of deleting and adding some documents using the views are
separated.
Merge pull request #1 from koemei/issue/2

Patch of your issue/2 views processing