Interface inheritance, fixed #19.
Dev pdef-compiler version in travis tests.
Merge branch '1.0' into 1.1

Conflicts:
	pdef-example/pom.xml
	pdef-servlet/pom.xml
	pdef/pom.xml
	pom.xml
Generator CLI, fixed #20.
Updated the readme.
Updated whatsnew.md.
RPC interface inheritance tests.