removed FORCE from usage and clean up output of scale cmd

[Finishes #64067896]
Fixup message of 'gcf scale'

[Finishes #63406236]
Fixup style and remove focused test
Merge branch 'pr/99'

[Finishes #66713926, 66713522]

Closes #98, #99
Go fmt
add script to fetch binaries and installers
Update stable version in README
Exit with status 1 only if we recovered from a panic

[Finishes #66819564]
Display friendlier error messages when ssl certs are invalid

[Finishes #66365530]
fix the gateway test on windows
improve error message for word

[Finishes #65160408]
Updated README.md text to v6.0.2
Make separate ModelNotFound and HttpNotFound error types

This removes the need to implement IsNotFound for every error type
Remove logic around userChanged from login command

[Finishes #66801926]
Improve error message for SliceContains

Also, use the types we defined in SliceContains for the params
Improve test description for target test
Add a helper to configReader for apiendpoint + version
CLI should prompt a user to set an API if not set

[Finishes #66169902]
cf target should show a helpful message when the api is not set

[Finishes #66821298]
validate SSL cert when getting logs from loggregator

[Finishes #66618788]