Docs: add basic documentation for CLI (#2101)

docs/common/cli/cli.adoc

@@ -0,0 +1,76 @@
+///////////////////////////////////////////////////////////////////////////////
+
+    Copyright (c) 2020 Oracle and/or its affiliates.
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+///////////////////////////////////////////////////////////////////////////////
+
+== Introduction
+
+The Helidon CLI lets you easily create a Helidon project by picking from a
+set of archetypes. It also supports a developer loop that performs continuous
+compilation and application restart, so you can easily iterate over source
+code changes.
+
+The CLI is distributed as a standalone executable (compiled using GraalVM) for
+ease of installation. It is currently available as download for Linux and Mac.
+Simply download the binary, install it at a location accessible from your PATH
+and you’re ready to go.
+
+== Installation
+
+[source,bash]
+.MacOS
+----
+curl -O https://helidon.io/cli/latest/darwin/helidon
+chmod +x ./helidon
+sudo mv ./helidon /usr/local/bin/
+----
+
+[source,bash]
+.Linux
+----
+curl -O https://helidon.io/cli/latest/linux/helidon
+chmod +x ./helidon
+sudo mv ./helidon /usr/local/bin/
+----
+
+Windows builds to come.
+
+
+== Create a New Project
+
+[source,bash]
+----
+helidon init
+----
+
+Then answer the questions.
+
+== Developer Loop
+
+[source,bash]
+----
+cd myproject
+helidon dev
+----
+
+As you make source code changes the project will automatically recompile and restart your
+application.
+
+
+== Demo
+
+image::cli/Helidon_cli.gif[CLI Demo, align="center"]
+

docs/mp/cli/01_cli.adoc

@@ -0,0 +1,29 @@
+///////////////////////////////////////////////////////////////////////////////
+
+    Copyright (c) 2020 Oracle and/or its affiliates.
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+///////////////////////////////////////////////////////////////////////////////
+
+= Helidon CLI
+:h1Prefix: MP
+:description: Helidon CLI
+:keywords: helidon cli
+
+The Helidon CLI enables developers to get started with Helidon with minimal
+effort: you can create a new application, build it, run it, and more, by
+running some simple commands.
+
+include::../../common/cli/cli.adoc[]
+

docs/se/cli/01_cli.adoc

@@ -0,0 +1,29 @@
+///////////////////////////////////////////////////////////////////////////////
+
+    Copyright (c) 2020 Oracle and/or its affiliates.
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+///////////////////////////////////////////////////////////////////////////////
+
+= Helidon CLI
+:h1Prefix: SE
+:description: Helidon CLI
+:keywords: helidon cli
+
+The Helidon CLI enables developers to get started with Helidon with minimal
+effort: you can create a new application, build it, run it, and more, by
+running some simple commands.
+
+include::../../common/cli/cli.adoc[]
+

docs/sitegen.yaml

@@ -88,6 +88,14 @@ backend:
               items:
                 - includes:
                     - "se/guides/*.adoc"
+            - title: "CLI"
+              pathprefix: "/se/cli"
+              glyph:
+                type: "icon"
+                value: "computer"
+              items:
+                - includes:
+                    - "se/cli/*.adoc"
             - title: "Config"
               pathprefix: "/se/config"
               glyph:
@@ -227,6 +235,14 @@ backend:
               items:
                 - includes:
                     - "mp/guides/*.adoc"
+            - title: "CLI"
+              pathprefix: "/mp/cli"
+              glyph:
+                type: "icon"
+                value: "computer"
+              items:
+                - includes:
+                    - "mp/cli/*.adoc"
             - title: "Config"
               pathprefix: "/mp/config"
               glyph: