Add session count
Add rssBytes
Add loadAverage
Add event loop metrics and small refactor
Remove console.log
Use Meteor.default_server.sessions.length
Use Date.now() and add startTime
Send an array
Fix bug
Get length using _.keys().length
Test model fields
Add endTime. Add test to package.js. Remove unwanted code and test endTime
reset uvmon when initializing the model
Merge branch 'system-metrics'