If you follow the code example line by line, you end up using InfluxDBClient which has not been imported yet. The complete example clearly show us referencing it through the module, so I edited the step-by-step instructions to do the same.
- Remove `influx repl` from CLI docs
- Create new REPL reference doc
- Point all links to the new doc
- Fix references to the old CLI command
- Remove scalar values warning
- Create new Tools section
- Standardize "Read-Eval-Print Loop"