Merge pull request #61 from magento-obsessive-owls/MAGETWO-91956-update-pagebuilder-installation-guide

[CMS Team 2 - Sprint 8] Update PageBuilder installation guide

Author: Igor Melnikov

app/code/Magento/PageBuilder/docs/install.md

@@ -32,18 +32,19 @@ Use this method if you are testing and evaluating PageBuilder for your Magento s
 
 ### Prerequisites
 
-* You submitted us MAGEID and github username and received access to 2.3 alpha and PageBuilder. If you didn't submit us github username with will send you an email and request it.
+* You submitted us MAGEID and github username and received access to 2.3 alpha and PageBuilder 100.0.0 alpha. If you didn't submit us github username with will send you an email and request it.
 
 ### Installation steps
 
-1. Navigate to the root directory of your Magento application
-2. Install 2.3 alpha, run composer create-project --repository-url=https://repo.magento.com/ magento/project-enterprise-edition=2.3.0-alpha20
-    Enter keys that you crated in your account (go to Marketplace / My Profile / Access Keys)
-3. Install Page Builder
+1. If you have installed 2.3.0 alpha or Page Builder 100.0.0 alpha version installed, run `composer clearcache` before installing again. If you don’t clear the cache, Composer will not download the latest alpha release from the repo. It will instead use your locally cached packages.
+2. Navigate to the directory where you want to install Magento and Page Builder.
+3. Install 2.3.0 alpha Commerce package, run composer create-project --repository-url=https://repo.magento.com/ magento/project-enterprise-edition=2.3.0-alpha.
+    Enter the access keys for your account (Marketplace / My Profile / Access Keys)
+4. Install Page Builder
     ``` sh
     composer require magento/module-page-builder-commerce
     ```
-4. Enable Page Builder module using the following command:
+5. Enable Page Builder module using the following command:
     ``` sh
     bin/magento setup:upgrade
     ```
@@ -55,7 +56,7 @@ Do not use this installation method for evaluation or production instances.
 
 ### Prerequisites
 
-* A local development installation of Magento 2.3
+* A local development installation of Magento 2.3.0 alpha
 * Access to the PageBuilder repository
 * [Yarn package manager]
 
@@ -78,6 +79,10 @@ Do not use this installation method for evaluation or production instances.
     bin/magento setup:upgrade
     ```
 
+## Update steps
+
+When a new version of Page Builder is available, destroy your existing 2.3.0-alpha instance and follow the [composer](install.md#Composer installation) or [GitHub](install.md#GitHub installation) installation steps.
+
 ## Installing Node.js dependencies
 
 If you plan to contribute to Page Builder, you need to install Node.js dependencies to compile TypeScript.