Update craft-plain-ics to be a Craft 3 plugin

.gitignore

@@ -0,0 +1 @@
+.DS_Store

CHANGELOG.md

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+# craft-plain-ics Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/) and this project adheres to [Semantic Versioning](http://semver.org/).
+
+## 2.0.0 - 2018-06-03
+### Added
+- Initial craft 3 release
+

LICENSE.md

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+The MIT License (MIT)
+
+Copyright (c) 2018 Plain Language
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

@@ -2,6 +2,27 @@
 
 A Craft CMS plugin that implements [eluceo/iCal](https://github.com/eluceo/iCal) package for creating ICS files in your Twig templates.
 
+![Screenshot](resources/img/plugin-logo.png)
+
+## Requirements
+
+This plugin requires Craft CMS 3.0.0-RC1 or later.
+
+## Installation
+
+To install the plugin, follow these instructions.
+
+1. Open your terminal and go to your Craft project:
+
+        cd /path/to/project
+
+2. Then tell Composer to load the plugin:
+
+        composer require plainlanguage/craft-plain-ics
+
+3. In the Control Panel, go to Settings → Plugins and click the “Install” button for `craft-plain-ics`.
+
+
 ## Twig Variables
 
 ### `render`

composer.json

@@ -1,5 +1,42 @@
 {
-  "require": {
-    "eluceo/ical": "0.13.0"
-  }
-}
+    "name": "plainlanguage/craft-plain-ics",
+    "description": "A Craft CMS plugin that implements the eluceo/iCal package for creating ICS files in your Twig templates.",
+    "type": "craft-plugin",
+    "version": "1.0.0",
+    "keywords": [
+        "craft",
+        "cms",
+        "craftcms",
+        "craft-plugin",
+        "ics"
+    ],
+    "support": {
+        "docs": "https://github.com/plainlanguage/craft-plain-ics/blob/README.md",
+        "issues": "https://github.com/plainlanguage/craft-plain-ics/issues"
+    },
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Plain Language",
+            "homepage": "http://plainlanguage.co/"
+        }
+    ],
+    "require": {
+        "craftcms/cms": "^3.0.0-RC1",
+        "eluceo/ical": "0.13.0"
+    },
+    "autoload": {
+        "psr-4": {
+            "plainlanguage\\plainIcs\\": "src/"
+        }
+    },
+    "extra": {
+        "name": "Plain ICS.",
+        "handle": "plain-ics",
+        "schemaVersion": "1.0.0",
+        "hasCpSettings": false,
+        "hasCpSection": false,
+        "changelogUrl": "https://raw.githubusercontent.com/plainlanguage/craft-plain-ics/CHANGELOG.md",
+        "class": "plainlanguage\\plainIcs\\PlainIcs"
+    }
+}