fixes #49, #55

install.md

@@ -17,7 +17,15 @@ Select the operating system you are working on.
 
 <div id="tab-osx" class="content active">
 
-[Node.js](http://nodejs.org/) is a prerequisite for installing the Tessel command line. You can install it from the [official website](http://nodejs.org/), or if you have [brew](http://brew.sh/) installed: `brew install node`
+[Node.js](http://nodejs.org/) is a prerequisite for installing the Tessel command line. You can install it using nvm by running the following commands in your terminal:
+
+`curl https://raw.githubusercontent.com/creationix/nvm/v0.23.2/install.sh | bash`
+
+`source ~/.bashrc`
+
+`nvm install 0.12.7`
+
+*Tessel's command line currently does not work on Node 4.x or higher; if you run `node --version` and see 4.something, please follow the instructions above. [[Track issue]](https://github.com/tessel/t2-start/issues/49)*
 
 Once Node.js is installed, run this installation script from your terminal:
 
@@ -34,6 +42,8 @@ If you are running Ubuntu _13.10 or later_, you can run this:
 
 `apt-get install nodejs nodejs-legacy`
 
+*Tessel's command line currently does not work on Node 4.x or higher; please install an earlier version. [[Track issue]](https://github.com/tessel/t2-start/issues/49)*
+
 Once Node is installed, run this in your terminal:
 
 `apt-get install libusb-1.0-0-dev libudev-dev`
@@ -49,6 +59,8 @@ On Windows 7, you may receive the notification "Device driver software was not s
 
 Next, install [Node.JS](http://nodejs.org). You need this to interact with Tessel from the command line.
 
+*Tessel's command line currently does not work on Node 4.x or higher; if you run `node --version` and see 4.something, please [install an earlier version](https://github.com/coreybutler/nvm-windows). [[Track issue]](https://github.com/tessel/t2-start/issues/49)*
+
 After installing the Tessel drivers and Node.js, run this in cmd.exe:
 
 <big>`npm install -g t2-cli`</big>