Added some basic install instructions.

README.rst

@@ -51,3 +51,45 @@ Buildout is a project designed to solve 2 problems:
 
 To learn more about buildout, including how to use it, see
 http://buildout.org/.
+
+Installation
+************
+
+There are a number of ways to install buildout.  You can install it as
+you would any other package, using pip or easy_install.  In this case,
+you'll get a buildout command that you can use to build projects.  To
+build a project, just use::
+
+  buildout
+
+from a project directory.
+
+Buildout's (stubborn) philosophy, however, is that projects should be
+self-contained, and not require changes to a shared Python
+installation. To avoid changing a shared Python installation you can
+download a bootstrap script that, when run, will install buildout
+locally in your project.
+
+The bootstrap script for buildout version 2 is at:
+
+  http://downloads.buildout.org/2/bootstrap.py
+
+So, for example, to install buildout 2 in a project, you might::
+
+  wget http://downloads.buildout.org/2/bootstrap.py
+  python bootstrap.py
+
+Then to build your project, you can just run::
+
+  bin/buildout
+
+from the project directory.
+
+The bootstrap script is often checked into version control.
+
+buildout 2 is somewhat backward-incompatible with version 1.  Most
+projects will probably work fine with either.  If you need to keep
+using version 1, however, specify a version requirement when you use
+pip or easy_install, or use the version 1 bootstrap script at:
+
+  http://downloads.buildout.org/1/bootstrap.py