add file to wb by curl example

[Daniel Baker]

Hi Maxim,

Can you save me the agony  of  working this out  and  show me how to do 
this  with  curl.

https://openmeetings.apache.org/openmeetings-webservice/apidocs/org/apache/openmeetings/webservice/FileWebService.html#add(java.lang.String,org.apache.openmeetings.db.dto.file.FileItemDTO,java.io.InputStream)


Thanks,


Dan