Support custom attributes
Merge remote-tracking branch 'origin/develop' into anya-key-value-feature

* origin/develop:
Add support for custom attributes in latencies
Revert "Support custom attributes"

This reverts commit b3d414abf8ba4a88279acd0d75c9f020eee0b175.

Conflicts:
	lib/latencies.js
Fix custom attributes format
Use riamnn client fork
Add support for custom attributes in events
Fix bug - missing parameter
Update utils.js
Merge pull request #21 from forter/anya-key-value-feature

Anya key value feature