Adding auto Fastlane plugin

plugins/fastlane/README.md

@@ -0,0 +1,47 @@
+# Fastlane Plugin
+
+Use `auto` to version your [pList] using fastlane, and push to your repository!
+
+## Installation
+
+This plugin is not included with the `auto` CLI installed via NPM. To install:
+
+```bash
+npm i --save-dev @auto-it/fastlane
+# or
+yarn add -D @auto-it/fastlane
+```
+
+> WARNING: You can only use one "package manager" at a time!
+> Mixing them will lead to undesired results.
+
+## Usage
+
+```json
+{
+  "plugins": [
+    [
+      "fastlane",
+      {
+        // Required, the relative path to your pList file
+        "pListPath": "./Example/Info.plist",
+        // Optional, specify a different executable for `fastlane`
+        "fastlaneCommand": "bundle exec fastlane"
+      }
+    ]
+    // other plugins
+  ]
+}
+```
+
+## Requirements
+
+### General
+
+- The machine running this plugin must have the [fastlane](https://fastlane.tools/) `fastlane` CLI installed already, or `fastlaneCommand` specified in your plugin configuration.
+- Using the logging flags with Auto (`auto -v`, `auto -vv`, `auto -q`) will also add the verbose or silent flags to the fastlane commands.
+
+### Pushing to the Repository
+
+
+### Pushing to a private repository