Port new description of Modelica to README.md

README.md

@@ -5,9 +5,8 @@ This repository contains the Modelica Language Specification, hosted at https://
 
 ## Description
 
-Modelica is a language for modeling of cyber-physical systems, designed to support effective library development and model exchange.
-It is a modern language built on acausal modeling with mathematical equations and object-oriented constructs to facilitate reuse of modeling knowledge.
-It can be used conveniently for modeling complex systems containing, e.g., mechanical, electrical, electronic, magnetic, hydraulic, thermal, control, electric power or process-oriented subcomponents.
+Modelica is a language for modeling of cyber-physical systems, supporting acausal connection of components governed by mathematical equations to facilitate modeling from first principles.
+It provides object-oriented constructs that facilitate reuse of models, and can be used conveniently for modeling complex systems containing, e.g., mechanical, electrical, electronic, magnetic, hydraulic, thermal, control, electric power or process-oriented subcomponents.
 
 ## Releases