Commits
Suvayu Ali authored and Neal Richardson committed 090f406dbf1
ARROW-4429: [Doc] Add Git conventions to contributing guidelines I tried to summarise the [mailing list thread](https://lists.apache.org/thread.html/c74d8027184550b8d9041e3f2414b517ffb76ccbc1d5aa4563d364b6@%3Cdev.arrow.apache.org%3E) mentioned in the JIRA, into a small section in the contributing guidelines. Please have a look. Closes #7503 from suvayu/contributing Authored-by: Suvayu Ali <fatkasuvayu+linux@gmail.com> Signed-off-by: Neal Richardson <neal.p.richardson@gmail.com>