README: add levels command

This commit is contained in:
TomasVotruba 2018-03-06 21:22:19 +01:00
parent d57305893b
commit 1d5bddfdf5

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@ -102,6 +102,12 @@ Do you need to upgrade to **Symfony 4.0**, for example?
vendor/bin/rector process src --level symfony33 --dry-run
```
3. What levels are on the board?
```bash
vendor/bin/rector levels
```
### B. Custom Sets
1. Create `rector.yml` with desired Rectors: