In general, prototypes have a name param. To reduce duplication, use the component name for the name param if the name parameter is omitted. This will turn :

```
ks prototype use deployed-service guestbook-ui \
--name guestbook-ui \
--image alpinejay/dns-single-redis-guestbook:1.0 \
--type LoadBalancer
```

into

```
ks prototype use deployed-service guestbook-ui \
--image alpinejay/dns-single-redis-guestbook:1.0 \
--type LoadBalancer
```

as the `--name` parameter will be inferred. If the operator wishes the name to be different, they can supply the name parameter:

```
ks prototype use deployed-service guestbook-ui \
--name fancy-stuff \
--image alpinejay/dns-single-redis-guestbook:1.0 \
--type LoadBalancer
```

Signed-off-by: bryanl <bryanliles@gmail.com>

Signed-off-by: bryanl <bryanliles@gmail.com>

Initialize namespace to 'default' if not specified

 Clarify errors for commands requiring subcommands

pkg install: Use 'master' as refSpec where version isn't provided

If the namespace is not provided in the target kubeconfig context, use
'default'.

Also squashes a bug where the namespace, server flags may have been
ignored during init.

Signed-off-by: Jessica Yuen <im.jessicayuen@gmail.com>

Currently, if a version is not provided to the following `pkg install`
command

`../ks pkg install incubator/redis`

, the following error will occur:

`ERROR GET
https://api.github.com/repos/ksonnet/parts/commits/incubator/redis

: 404
Not Found []`

This commit will pull in the latest package from master where the
version is not specified.

Also set the default repository ref to 'master' instead of 'test-reg'.

Signed-off-by: Jessica Yuen <im.jessicayuen@gmail.com>

Better support for jsonnet param schemas

Use relative paths on jsonnet imports

Currently, commands such as `ks env non-existent-subcommand` will output
an error `Command 'env' requires a subcommand`.

This is not helpful since the user may assume there is the subcommand
'non-existent-subcommand'. This commit will clarify the error messages
in this scenario.

Signed-off-by: Jessica Yuen <im.jessicayuen@gmail.com>

Signed-off-by: Jessica Yuen <im.jessicayuen@gmail.com>

Signed-off-by: Jessica Yuen <im.jessicayuen@gmail.com>

Currently the schema for the component/params.libsonnet file do not
support top-of-file imports. This change will allow support.

Signed-off-by: Jessica Yuen <im.jessicayuen@gmail.com>

Currently absolute paths are being used for jsonnet imports. This makes
it difficult to share the files across different systems.

Signed-off-by: Jessica Yuen <im.jessicayuen@gmail.com>

Update ks show docs and tweak readme

Signed-off-by: Jessica Yao <jessica@heptio.com>

Signed-off-by: Jessica Yao <jessica@heptio.com>

Signed-off-by: Jessica Yao <jessica@heptio.com>

Document brew install

Signed-off-by: Joe Beda <joe.github@bedafamily.com>

Fix segfault for ks diff

Improve ks init help message

Output usage and return when no command args are provided for `ks diff`.

[docs][prototypes] Rename 'deployment-exposed-with-service' and address README feedback

Improve logging for init

- Add message:  Creating a new app 'foo' at path '/path/to/foo'
- On success, add message:  ksonnet app successfully created! Next, try
  creating a component with `ks generate`
- On failure, provide suggestions for the user.
- Make note that the context is retrieved from the kubeconfig file at
  the environment variable $KUBECONFIG

Specifically,

1. Place more emphasize on project initialization based on context
2. Place ksonnet-lib details into footer.
3. Order examples based on most common use cases.
4. Suggest to visit ks generate

Rename <env>.jsonnet file to main.jsonnet

Fix `nil` dereference error in #129

In line 161 of `root.go`, we're failing to check whether a cluster in
the $KUBECONFIG clusters array exists before using it. This will cause a
`nil` dereference error.

Transition system templates to beta.3

Currently, there are limitations around the file system we are using
that does not easily allow renaming of `us-west/prod` to `us-west`, or
vice versa - `us-west` to `us-west/prod`.

This commit will handle the logic to allow for that by moving the file
contents.

Remove command update

[docs] Very minor README edits

[docs] Fix ksonnet concept overview image + minor doc nits