Added project description.

README.md

+# NGS Introduction Course
+This repository contains lectures and practicals for a one day introduction to
+NGS data analysis.
+
+## Organisation
+There are two submodules on which this repository depends.
+
+- **presentation** template for presentations in LaTeX.
+- **presentation-pics** repository containing pictures.
+
+The **website** directory is for storing the compiled presentations, handouts
+and program. A *Trac wiki markup* file contains the website content. Uploading,
+updating and adding attachments can be done easily with the
+[tracwiki](https://pypi.python.org/pypi/tracwiki) program.
+
+## Usage
+A new presentation can be added like this:
+
+    cd presentation
+    bash mkpres.sh ../mypresentation
+
+Pictures in the presentation can be made available by adding a symbolic link to
+the presentation-pics repository.
+
+    ln -s ../presentation-pics/pics/somepicture.png
+
+The Makefile will take care of converting this picture to the correct format.