add README file

Author: amade

README

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+Original code from:
+https://code.google.com/p/php-excel-reader/
+
+This PHP library expands on the great work done in the PHP Excel Reader project on SourceForge.
+
+It reads the binary format of XLS files directly and can return values and formats from any cell.
+
+-----
+
++ Some patches to make it work with newer PHP versions