Fix up documentation

README.md

@@ -8,7 +8,7 @@ Installation
 The installation process is a bit messy at the moment. Here's a high-level
 overview of what you should do to get started.
 
-**TLDR:** There is a `create-dev-env.sh` script that will attempt to set all
+**TLDR:** There is a `scripts/create-dev-env.sh` script that will attempt to set all
 of this up for you. If you're in a hurry, run that script. Otherwise, I suggest
 that you understand what the script is doing, and why, by reading this document.
 
@@ -77,11 +77,16 @@ environment), and Node has a library installer called
 Once you've got your languages and virtual environments set up, install
 the libraries like so:
 
-    $ pip install -r pre-requirements.txt
-    $ pip install -r requirements.txt
+    $ pip install -r requirements/base.txt
+    $ pip install -r requirements/post.txt
     $ bundle install
     $ npm install
 
+You can also use [`rake`](http://rake.rubyforge.org/) to get all of the prerequisites (or to update)
+them if they've changed
+
+    $ rake install_prereqs
+
 Other Dependencies
 ------------------
 You'll also need to install [MongoDB](http://www.mongodb.org/), since our
@@ -137,7 +142,7 @@ Studio, visit `127.0.0.1:8001` in your web browser; to view the LMS, visit
 There's also an older version of the LMS that saves its information in XML files
 in the `data` directory, instead of in Mongo. To run this older version, run:
 
-$ rake lms
+    $ rake lms
 
 Further Documentation
 =====================

doc/development.md

@@ -36,7 +36,7 @@ Check out the course data directories that you want to work with into the
 To create your development environment, run the shell script in the root of
 the repo:
 
-    create-dev-env.sh
+    scripts/create-dev-env.sh
 
 
 ## Starting development servers