Default login to username of admin

The documentation uses admin as a default, so we can save users
on some typing and complexity by defaulting this CLI parameter.

It can still be overriden if needed.

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

Add better error messages

- adds better error messages for wrong secret arguments

Signed-off-by: Leonardo Di Donato <leodidonato@gmail.com>

Fix typo

Signed-off-by: Scott Robinson <scott@dor.ky>

Remove multiple repos feature

Removing multiple repositories pull feature for
simplicity along with adding information on the
command in TEMPLATE.md file

Signed-off-by: Martin Dekov (VMware) <mdekov@vmware.com>

Move from Go to Generic for build

Go is used via a container - not the travis environment.

Signed-off-by: Alex Ellis (VMware) <alexellis2@gmail.com>

Fixes for tls-no-verify

1. fix bug where `invoke` command was ignoring the --tls-no-verify
command line argument

2. add --tls-no-verify command line argument to the `remove` command

3. fix bug where `login` does not respect environment proxy variable `http_proxy`

4. add better error message if login fails, useful to explain certificate errors etc...

5. `deploy` command not respecting environment proxy variable `http_proxy` during a replace

6. add default time out const for majority of functions

7. make func `makeHTTPClientWithDisableKeepAlives` private not used outside of proxy package

8. version supports basic auth

Signed-off-by: Edward Wilde <ewilde@gmail.com>

Add check for file when not in append mode

Reworking of the append function introduced a characteristic whereby
if a handler directory was deleted but the yaml file remained then
the content would be appended to the file even when append was not
set.

This commit adds a check for the file existing if the append mode is
not set and exists with an error, informing the user that the yaml
file already exists.

Signed-off-by: Richard Gee <richard@technologee.co.uk>

Print labels and annotations in describe command

This commit prints labels and annotations in `faas-cli describe` command
whenever it is available.

Fixes: openfaas#533

Signed-off-by: Vivek Singh <vivekkmr45@yahoo.in>

Add more unit test for GetFunctionInfo

Signed-off-by: Vivek Singh <vivekkmr45@yahoo.in>

Update README to include HMAC signing detail

Signed-off-by: Richard Gee <richard@technologee.co.uk>