feat(docs): update readme to reflect the new features

Signed-off-by: Lorenzo Fontana <[email protected]>

Author: fntlnz

README.md

@@ -42,8 +42,8 @@ To consider this project (ready) the goals are:
 - [x] basic program run and attach
 - [x] list command to list running traces - command: `kubectl trace get`
 - [x] delete running traces
-- [ ] run without attach
-- [ ] attach command to attach only - command: `kubectl trace attach <program>`
+- [x] run without attach
+- [x] attach command to attach only - command: `kubectl trace attach <program>`
 - allow sending signals (probably requires a TTY), so that bpftrace commands can be notified to stop by the user before deletion and give back results