Add and commit changes to README when creating a release.
Add and commit changes to README when creating a release.

This ensures that changes e.g. contributors are included.
Razoxane/wsdl2phpgenerator,sha1/wsdl2phpgenerator,red-led/wsdl2phpgenerator,ivol84/wsdl2phpgenerator,kasperg/wsdl2phpgenerator,parabolicinteractive/wsdl2phpgenerator,jongotlin/wsdl2phpgenerator,yethee/wsdl2phpgenerator,Intera/wsdl2phpgenerator,wsdl2phpgenerator/wsdl2phpgenerator