Refactor the huge README.md into the more structured mkdocs.

I also cleaned up the installation section and added links to various
competing redo implementations.

The new README.md is basically just link to the docs on
readthedocs.org, and a link to the mailing list.

These docs need a *lot* more work, but this is enough of an improvement
that I'll commit it anyway for now.

Documentation/GettingStarted.md

@@ -0,0 +1,36 @@
+# Prerequisites
+
+Currently, this version of redo requires python2.7 and the python2.7 sqlite3 module. 
+Optional, but recommended, is the
+[setproctitle](http://code.google.com/p/py-setproctitle/) module, which makes your
+`ps` output prettier.
+
+In modern versions of Debian, sqlite3 is already part of the python2.7 package. 
+You can install the requirements like this:
+```sh
+	sudo apt-get install python2.7 python-setproctitle
+```
+(If you have install instructions for other OSes, please add them here :))
+
+
+# Clone, compile, and test redo
+
+You can run redo without installing it, like this:
+```sh
+	git clone https://github.com/apenwarr/redo
+	cd redo
+	./redo -j10 test
+```
+
+If the tests pass, you can either add $PWD/redo to your PATH, or install
+redo on your system.  To install for all users, put it in /usr/local:
+
+```sh
+	PREFIX=/usr/local sudo ./redo install
+```
+
+Or to install it just for yourself (without needing root access), put it in
+your home directory:
+```sh
+	PREFIX=$HOME ./redo install
+```