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README.md

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 # Formula1
-Mathematical formulas evaluator for PHP
+**Simple Mathematical formulas evaluator for PHP**
+
+If you need to evaluate a formula with basic operators and variables, and
+
+- You dont want to use EVAL for obvious security reasons
+- You don't want to rely on half the internet as dependancies, but prefer a single self-contained class
+- You don't necessarily have the latest PHP version
+- You want something readable that you could easily understand and customize.
+
+Then you might like Formula1 ! ;-)