Azure-devops-cli-extension: Help commands have bad performance

[bergmeister]

Trying to get help takes about a second, which is a very noticeable lag and given that it should not need to call a REST endpoint for that unlike other commands, I do not expect it to take so long.
In PowerShell (on a 4 core Xeon VM) for example:
````powershell

Measure-Command { vsts -h }
Days : 0
Hours : 0
Minutes : 0
Seconds : 0
Milliseconds : 907
Ticks : 9077662
TotalDays : 1.05065532407407E-05
TotalHours : 0.000252157277777778
TotalMinutes : 0.0151294366666667
TotalSeconds : 0.9077662
TotalMilliseconds : 907.7662

````

[tedchamb]

We have already made some improvements to speed of help commands in the dev branch, and we will be investigating to see what else we can do.

[bergmeister]

Thanks. How often are you planning to release the next previews? It would be great to get the installers from the build or have a URL pointing to a nightly build.

[tedchamb]

The current thinking is that we would put a new preview build out each sprint (3 weeks) if there are enough changes to warrant it. That may change. We also plan to have a page where you can download nightly dev builds. I don't have an estimate yet on when that will be ready.

[tedchamb]

Version 0.1.1 of the cli is now available, which contains the change in #84.

[bergmeister]

@tedchamb Awesome. Please add the new release to the release notes here: https://github.com/Microsoft/vsts-cli/releases

[tedchamb]

Done:
https://github.com/Microsoft/vsts-cli/releases/tag/0.1.1