Update README.md

Author: rainboyan

README.md

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 # Grace Dynamic Modules Plugin
 
 Grace Dynamic Modules Plugin (GDMP) offer new ways of creating modular and maintainable Grace applications.
 
 A Grace plugin can implement one or more plugin modules to develop and extend Grace applications.
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 We can use Dynamic Modules to maximize the use of Grace plugins and create an open, shared, and reusable plugin market.
 
 ## Grace Version