Thankyou  @kautuksahni . It was helpful 

Hi,I have tried installing the package. The feature are specified in the node but it not working.Is there anything else that I have to follow.

 I wanted to add the font size feature in the Rich Text Editor. I followed the Adobe Document for creating but still I am not able to get the font size feature. In the document it said that we had to add a property enableFontSize , but even after adding it is not working.Adobe Document Linkhttps://h...