node version update

[hebertsilva]

CHANGE LOG

This PR determines the version of NODE, to use > 11.0.0 versions

Error for use node = 12.4.0

$ error newrelic@5.9.1: The engine "node" is incompatible with this module. Expected version "> = 6.0.0 <11.0.0".

• installation
• run tests

NOTES

Analyze the possibility of using the latest version of Node

[michaelgoin]

Hi @hebertsilva ,

Today, we decided to open up the engines restriction for those who want to make use of the agent in Node 11 & 12 prior to official support. This has not yet shipped but should land in the next couple releases. Previously, we were holding off on allowing 11+ versions until we had a chance to vet for official support.

We've created this issue #279 to keep track of any known issues discovered prior to official support, which is on our roadmap.

I'm closing this PR, as it is no longer necessary, but we appreciate the contribution.

Thanks,

Michael