Update README

Author: jsiegle

README.md

@@ -7,8 +7,7 @@ Streams one channel of continuous data from the Open Ephys GUI to a live Matlab
 
 ## Installation
 
-(Coming soon)
-
+This plugin can be added via the Open Ephys GUI Plugin Installer. To access the Plugin Installer, press **ctrl-P** or **⌘P** from inside the GUI. Once the installer is loaded, browse to the "Matlab Interface" plugin and click "Install."
 
 ## Usage
 
@@ -188,7 +187,7 @@ Once you have designed your class, you can call it from the Matlab command windo
 
 First, follow the instructions on [this page](https://open-ephys.github.io/gui-docs/Developer-Guide/Compiling-the-GUI.html) to build the Open Ephys GUI.
 
-**Important:** This plugin is intended for use with the pre-release core application, version 0.6.0. The GUI should be compiled from the [`development-juce6`](https://github.com/open-ephys/plugin-gui/tree/development-juce6) branch, rather than the `master` branch.
+**Important:** This plugin is intended for use with the latest version of the GUI (0.6.0 and higher). The GUI should be compiled from the [`main`](https://github.com/open-ephys/plugin-gui/tree/main) branch, rather than the former `master` branch.
 
 Then, clone this repository into a directory at the same level as the `plugin-GUI`, e.g.:
 
@@ -233,7 +232,7 @@ make -j
 make install
 ```
 
-This will build the plugin and copy the `.so` file into the GUI's `plugins` directory. The next time you launch the GUI compiled version of the GUI, the Matlab Interface plugin should be available.
+This will build the plugin and copy the `.so` file into the GUI's `plugins` directory. The next time you launch the compiled version of the GUI, the Matlab Interface plugin should be available.
 
 
 ### macOS