Make landing page as simple as possible and point to Wiki for documentation

Author: George K. Thiruvathukal

README.md

@@ -7,27 +7,7 @@
 ZettelGeist is a plaintext notetaking system inspired by the Zettelkasten approach. As this README is intended to be minimal,
 we encourage you to visit http://zettelgeist.com for additional details.
 
-# Installation
+# Getting Started
 
-Installation is done via PyPI.
-```
-pip install zettelgeist
-```
+Please see the [ZettelGeist Wiki](https://github.com/ZettelGeist/zettelgeist/wiki) for detailed installation and usage instructions.
 
-Power users can install by checking out the repo and running `setup.py` to install.
-
-We recommend that you use a virtualenv as we are still in beta.
-
-# Features
-
-- A zettel is a "note card"
-- Zettels written using YAML
-- Zettels indexed using sqlite with FTS extensions
-- Zettel searched using a query language (ZQL = Zettel Query Language) similar to Gmail's search operators
-- Search results are rendered as a folder of zettels
-- Replacement can be done on a set of notes to change any YAML field
-- command-line and text editor driven workflow
-
-For details, please see the main web site. This is where we'll provide full user documentation and recipes to help you get started.
-We are developer-users of this project and are presently working on our own book. ZettelGeist is being used to organize all of the 
-research for our book. So if it doesn't work for us, it probably won't work for you!