Add Heroku deploy button

[albertoperdomo]

This PR adds a Heroku deploy button as an alternative way to deploy the template app.

[aseemk]

Thanks @albertoperdomo!

[albertoperdomo]

Hey @aseemk,

after opening this PR, @jexp told me there is more up-to-date template repo for node-neo4j at https://github.com/neo4j-examples/node-neo4j-template.

From my POV it looks that both repos are out of sync or something, with some recent updates on yours and on theirs too.

Do you have a suggestion on moving forward?

I'd like to see a Heroku deploy on the driver repo, but the question is which template repo it should be based on.

We also want to know which of the template repos to reference from our Heroku docs.

[albertoperdomo]

Ping @aseemk

[aseemk]

Oops sorry for the delay!

Yep, the two repos are branched. The difference is mainly just issue #11 (new-style indexing), which I do want to implement here. We've done that at @fiftythree, so I'll definitely look to update this here soon.

More importantly, now that we've shipped Mix, I want to use this repo as a playground to share some of the ideas we built (and which we want to open-source) for it, e.g. around programmatic query generation.

If all goes well, this repo will be the start of a higher-level "OGM" for Neo4j on Node.js.

Just spread thin at the moment — wish I had more time in the day. =)

[albertoperdomo]

Oh, good to know!
Looking forward to see those ideas in practice!
Thanks @aseemk.