Mention that pip package should also be reinstalled #145

All 647 tests pass in 6m 46s

647 tests ±0 647 ✔️ ±0 6m 46s ⏱️ +15s
    1 suites ±0     0 💤 ±0
    1 files ±0     0 ❌ ±0

Results for commit 004c93e. ± Comparison against earlier commit 91a53ce.