Update README.md for 4.0.0 release

README.md

@@ -11,7 +11,7 @@ omitted if it is explicitly being included).
 ![Gradle View](http://plugins.jetbrains.com/files/7150/screenshot_14710.png)
 
 ## Features
- * Built on the [Gradle Tooling API 3.5.1](https://docs.gradle.org/3.5.1/userguide/embedding.html), but should work on most 1.x, 2.x, 3.x, and 4.x versions
+ * Built on the [Gradle Tooling API 5.6.2](https://docs.gradle.org/5.6.2/userguide/embedding.html), but should work on other recent versions
  * Visual highlighting to indicate dependencies in use and replacement versions
  * Lexicographically sorted listing for all Gradle configurations
  * Load any project's Gradle dependencies, not just the one currently open inside IntelliJ
@@ -20,32 +20,50 @@ omitted if it is explicitly being included).
 ## Installation
 The latest version of the Gradle View plugin is available on the
 [JetBrains Plugin Repository](http://plugins.jetbrains.com/). The first time you interact with Gradle View, you may
-need to download the embedded version of Gradle 3.5.1 in case you don't already have a cached copy available on your
+need to download the embedded version of Gradle in case you don't already have a cached copy available on your
 workstation. This should be seamless, and the tool window title and log will indicate a download of this is in progress.
-You may also build and install the plugin from source (see below).
+
+The IntelliJ plugin zip and a standalone jar release are available [here](https://github.com/rholder/gradle-view/releases).
+The standalone jar can be run without IntelliJ. You may also build and install the plugin from source (see below).
 
 ## Building from source
-The Gradle View plugin uses a [Gradle](http://gradle.org)-based build system. In the instructions
+This repository has everything needed to set up the development environment to build this plugin from source.
+
+The Gradle View plugin itself uses a [Gradle](http://gradle.org)-based build system. In the instructions
 below, [`./gradlew`](http://vimeo.com/34436402) is invoked from the root of the source tree and serves as
 a cross-platform, self-contained bootstrap mechanism for the build. The prerequisites are
-[Git](https://help.github.com/articles/set-up-git) and JDK 1.7+ for using the Gradle Wrapper bootstrap.
-You'll also need the IntelliJ IDEA SDK installed in your IntelliJ environment. See
-[Configuring IntelliJ IDEA SDK](http://confluence.jetbrains.net/display/IDEADEV/Getting+Started+with+Plugin+Development)
-for details.
+[Git](https://help.github.com/articles/set-up-git) and JDK 1.8+ for using the Gradle Wrapper bootstrap.
 
-### check out sources
-`git clone git://github.com/rholder/gradle-view.git`
+More information about the IntelliJ IDEA plugin development process can be found
+[here](https://www.jetbrains.org/intellij/sdk/docs/tutorials/build_system/gradle_guide.html#overview-of-the-intellij-idea-gradle-plugin),
+but the following are some bare bones testing and development instructions:
 
-### add Gradle build variables
-Create a custom `gradle.properties` file in the root directory and add a tooling version to use, as in:
+#### Check out sources
+Check out this repository locally with:
+```bash
+git clone git://github.com/rholder/gradle-view.git
+```
 
-    gradleToolingApiVersion=3.5.1
-    ideaPluginJdkName=IDEA IU-135.690
+#### Adjust Gradle build variables
+Review the contents of the `gradle.properties` file in the root directory and update them if desired.
 
-The `ideaPluginJdkName` should be the version you have referenced in your IntelliJ IDE.
+#### Compile and build plugin distribution zip
+Run the following to create an installable plugin zip in `build/distributions/gradle-view-*.zip`:
+```bash
+./gradlew clean distPlugin
+```
+[Install the plugin from disk](https://www.jetbrains.com/help/idea/managing-plugins.html) with `Settings/Preferences` -> `Plugins` -> `(Gear Icon)` -> `Install Plugin from Disk`.
 
-### compile, test and build plugin distribution zip
-`./gradlew clean distPlugin`
+#### Compile and build a standalone jar
+A standalone Swing version that doesn't depend on IntelliJ can be built with:
+```bash
+./gradlew clean distStandalone
+```
+This jar can then be run with:
+```bash
+java -jar build/distributions/gradle-view-standalone.jar
+```
+NOTE: This is not the same as the IntelliJ platform plugin zip. It cannot be installed in the IDE.
 
 ## License
 The Gradle View plugin is released under version 2.0 of the