New Matrex adapter to Groovy

I released in these days the new Matrex adapter to the Groovy language.
This follows the two adapters to Jython (integrated in Matrex) and to JRuby.
This adapter is good:

• for fast prototyping and test of function templates
  
• to write more compact code than in Java
  
• to use features, for example closures, that are not available in Java

Like the other language adapters it used in this way:

1. create a Groovy script with the code for the function template
2. create the function template definition
3. use the function template to create functions in Matrex projects

More information can be found in the documentation included in the Groovy adapter setup.