Changed variable name to better reflect value
Changed variable name to better reflect value

Calling the variable that holds the deserialized record or array of records `primary` is confusing because it's suggestive (in the case of DB records or JSON representations thereof) of primary keys.

The method signatures for `_addRecordsToCache` and `_addRecordToCache` use `records` and `record`, respectively, so this is consistent with their use.
lytbulb/orbit-firebase,jpvanhal/orbit.js,lytbulb/orbit-firebase,opsb/orbit-firebase,lytbulb/orbit-firebase,rollokb/orbit.js,SmuliS/orbit.js,orbitjs/orbit.js,rollokb/orbit.js,beni55/orbit.js,opsb/orbit.js,greyhwndz/orbit.js,jpvanhal/orbit.js,opsb/orbit-firebase,opsb/orbit.js,jpvanhal/orbit-core,opsb/orbit-firebase,ProlificLab/orbit.js,beni55/orbit.js,gnarf/orbit.js,jpvanhal/orbit-core,greyhwndz/orbit.js,lytbulb/orbit.js,ProlificLab/orbit.js,SmuliS/orbit.js,lytbulb/orbit.js,orbitjs/orbit.js,orbitjs/orbit-core,opsb/orbit-firebase