Fixes #176 - Additional documentation on apoc.triggers

[DanielBerton]

We created some examples and described the available statements, let me know if it's enough or is better add other documentation or examples

[jexp]

Cool, some notes.

1. Overview shouldn't include the file, that should be in index.adoc
2. Overview is only for a general listing, which will be replaced by just including the generated documentation csvs.
3. this seems to be mixed with the refactoring examples ? (which are also in overview.adoc, and be moved out). I don't mind if you leave them in a single PR but please move it to a separate adoc file and include that in the right place in index.adoc

Thanks

[DanielBerton]

@jexp ok we move the include in the index.adoc, we can put it in a separate section (like before Appendix: Complete Overview that contains all the overview.adoc) or inside an existing one?
The refactoring examples was merged #399 we can fix it in this PR or in a new issue.

[DanielBerton]

I thought about modifying the refactor example in the issue #331 today

[DanielBerton]

@jexp PR updated

[jexp]

Cool, thanks a lot !