Updated documentation needed

[MikeKemmerer]

The documentation needs to be updated to show what configuration changes the user needs to make in order for this to work. For example:

1. Update README to say that you need to have a file called config.json
2. Where the user defines theaddress and port of the elasticsearch node
3. Anything else we need to know to get it to work.

[s33butler]

Where does the config.json go, do you have an example?

I copied splunk-elasticsearch to the apps folder but I am having difficulty getting it to work...

Error
Search Factory: Unknown search command 'esearch'.

[wetfiregames]

The documentation is outdated, in splunk search commands listed for this app there is "es" which seems to have just been shortened, changed from the original 'esearch'.

[beaunewcomb79]

This app documentation is comically bad 😂