Add info about grid direction into readme and minimal fixes
#326
| Job | Run time |
|---|---|
| 17s | |
| 24s | |
| 3m 37s | |
| 3m 42s | |
| 3m 46s | |
| 4m 10s | |
| 4m 22s | |
| 3m 56s | |
| 4m 0s | |
| 4m 6s | |
| 3m 55s | |
| 4m 2s | |
| 3m 29s | |
| 3m 42s | |
| 3m 51s | |
| 3m 46s | |
| 55m 5s |