Update README.md

README.md

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-GregoBase
-=========
+# Gregobase
+
+## Prerequisites
+* A working installation of [WordPress](http://wordpress.org/) (used for user management only)
+* [gregorio](https://gna.org/projects/gregorio/)
+* [LuaLaTeX](http://www.tug.org/texlive/)
+* [ImageMagick](http://www.imagemagick.org/)
+* [PDFCrop](http://pdfcrop.sourceforge.net/)
+* [GhostScript](http://www.ghostscript.com/)
+
+## Install
+* Copy all GregoBase files into the WordPress directory
+* Set your database connection data in `include/db.php`
+* Import `gregobase_structure.sql` into your db
+
+If you want to have a local copy of http://gregobase.selapa.net
+
+* Import `grego_online.sql` into your db