Changes in RadiatorEN442_2 model. fraRad
this is for #135
Adding revision to RadiatorEN442_2
Add corrections related to issue #137
Correction/Extension of the changes explanation in revision section
Merge branch 'issue135_fraRad' of https://github.com/carlesRT/modelica-annex60 into carlesRT-issue135_fraRad
Corrected documentation for #137 and corrected punctuation.
Merge branch 'carlesRT-issue135_fraRad'