wsk CLI needs a flag to query its version

[uwefassnacht]

How do I know which version of the CLI I have installed? And whether it's the latest & greatest one? How do I know when to update (re-install) the CLI?

It would be good to provide a -v flag (similar to the cloud foundry CLI) that outputs the version. I realize that -vis already taken (verbose option).

At the very least, the CLI "splash screen" (displayed when using wsk without any options) should display a version number.

It's also not clear from the CLI repo at https://openwhisk.ng.bluemix.net/cli/go/download what the current version is and whether it's time to update.

[sjfink]

wsk property get --cliversion

probably duplicate of #1492

[rabbah]

@houshengbo @pritidesai as part of making the JSON object available advertising the CLIs versions, it would be nice to address the comment above: the link to a binary should carry version information.

Of course, we don't have a proper version yet or release tag (#1880).
@csantanapr I think we need one epic to track all the related CLI issues for versioning, the download page, etc.

[eweiter]

It would also be nice if we could try to expose this info through the CLI page on the download button or near it.

[dubee]

@eweiter, @houshengbo, we should be able to expose the CLI version to the UI via the content.json file.

[csantanapr]

Issue moved to apache/incubator-openwhisk-cli #136 via ZenHub