update windows docs to use rubyinstaller.org

doc/WindowsInstallation.md

@@ -1,49 +1,66 @@
-Before you begin, you'll need to install stuff:
+## Install dependencies
 
-Ruby, Git, and Rails: http://railsinstaller.org/en
-PostgreSQL 9.2:       http://www.enterprisedb.com/products-services-training/pgdownload
-nodejs:               http://nodejs.org/download
+Setting up Ruby on Windows is more of a challenge than using macOS or Linux, but there are a number of tools to make the setup easier. The five components you will need to get started are:
 
-During the installation of the PostgreSQL database, you'll need to choose a
-database password. Anything is fine, just note down what you choose.
+1. Ruby - the files for the programming language, including the program `gem` which enables you to install additional ruby libraries
+2. Ruby Development Kit - extra tools from rubyinstaller.org to make building rails on Windows possible.
+3. Node.js - Javascript package manager
+4. Git - a version control system.
+5. Postgresql 9.2: the database used in Metamaps.
 
-Once you are ready, create a new folder to hold this and any other git
-repositories. As an example, let's pretend you've chose C:\git, and made that
-folder writable by your user account.
+### Ruby, Ruby Development Kit, and Node.js
+
+http://blog.teamtreehouse.com/installing-rails-5-windows is an excellent tutorial that guides you through installing the first three components; in case the tutorial isn't working, you can also find what you need at http://rubyinstaller.org and https://nodejs.org.
+
+To verify that ruby installed correctly, install your first rubygem by running:
+
+    gem install bundler
+
+To verify that node.js installed correctly, install your first npm package by running:
+
+    npm install webpack
+
+### Git
+
+Git can be downloaded from https://github.com/git-for-windows/git/releases. Using the latest release ending in "64-bit.exe" should be fine. After installing, you can verify it works and set up your environment by running these commands in the command prompt:
+
+    git config --global user.name "John Doe"
+    git config --global user.email "johndoe@example.com"
+
+### PostgreSQL 9.2 Database
+
+PostgreSQL 9.2 can be downloaded from http://www.enterprisedb.com/products-services-training/pgdownload. During the installation, you'll need to choose a database password. Anything is fine, just note down what you choose.
+
+## Build Metamaps
+
+Once you are ready, create a new folder to hold this and any other git repositories. As an example, let's pretend you've chose C:\git, and made that folder writable by your user account.
 
 Now you are ready to clone the Metamaps git repository:
 
+    cd \git
     git clone https://github.com/metamaps/metamaps.git --branch develop
     cd metamaps
+    gem install bundler
     bundle install
 
-The third `bundle install` command downloads and installs the rubygem
-dependencies of Metamaps.
+The `bundle install` command downloads and installs the rubygem dependencies of Metamaps. `gem install bundler` is only needed if you didn't run it earlier.
 
-You also need to install the ES6 code from the nodejs repositories:
+The next step is to install the ES6 code from the nodejs repositories:
 
     npm install
     npm run build
 
-At this point you should be in C:\git\metamaps, or whatever equivalent
-directory you've chosen. The next step is to set up your database
-configuration. From the metamaps directory, run
+At this point you should be in C:\git\metamaps. The next step is to set up your database configuration. From the metamaps directory, run
 
     start config
 
-This command will open a Windows Explorer window of the "config" directory of
-Metamaps. Copy `.example-env`, and rename the copy to `.env`. Edit the file and
-set the DB_PASSWORD to be whatever you set up with postgres earlier. Once
-you're done, then move back into the command prompt. The next few commands will
-fail unless `.env` is correctly configured and Postgres is running.
+This command will open a Windows Explorer window of the "config" directory of Metamaps. Copy `.example-env`, and rename the copy to `.env`. Edit the file and set the DB_PASSWORD to be whatever you set up with postgres earlier. Once you're done, then move back into the command prompt. The next few commands will fail unless `.env` is correctly configured and Postgres is running.
 
     rake db:create
     rake db:schema:load
     rake db:fixtures:load
 
-And you're set up! At this point, you should be able to run the server at any
-time with only one command; you don't need to repeat any of the previous steps
-again. The command to run the server is:
+And you're set up! At this point, you should be able to run the server at any time with only one command; you don't need to repeat any of the previous steps again. The command to run the server is:
 
     rails s