[SCB-587] Fix archetypes readme

[zhengyangyong]

Signed-off-by: zhengyangyong yangyong.zheng@huawei.com

Follow this checklist to help us incorporate your contribution quickly and easily:

• Make sure there is a JIRA issue filed for the change (usually before you start working on it). Trivial changes like typos do not require a JIRA issue. Your pull request should address just this issue, without pulling in other changes.
• Each commit in the pull request should have a meaningful subject line and body.
• Format the pull request title like [SCB-XXX] Fixes bug in ApproximateQuantiles, where you replace SCB-XXX with the appropriate JIRA issue.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Run mvn clean install to make sure basic checks pass. A more thorough check will be performed on your pull request automatically.
• If this contribution is large, please file an Apache Individual Contributor License Agreement.

---

update generate from snapshot repo command

[coveralls]

Coverage increased (+0.005%) to 87.376% when pulling cf50718 on zhengyangyong:SCB-587 into 61cda00 on apache:master.

[wujimin]

by the old command, i succeeed to create project and run "mvn install"
(just copy and run, did no change anything, even did not replace ${archetype-version} to be 1.0.0-m2-SNAPSHOT)
so why we need to do this change?

and maybe this is a problem:
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ aid ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding GBK, i.e. build is platform dependent!
[INFO] Compiling 3 source files to D:\aid\target\classes

[zhengyangyong]

mvn archetype:generate may use latest version 3.0+ of archetype-plugin,archetypeRepository had deleted,https://maven.apache.org/archetype/maven-archetype-plugin/generate-mojo.html

[wujimin]

ok, i see

but maybe encoding is a problem.

[zhengyangyong]

Encoding problem PR : #710

[WillemJiang]

In the release version we do need to specify the archetypeRepository.
I think it's better explain -DarchetypeXXX options to avoid making user confused.

[zhengyangyong]

Done