upgraded to Spring XD version 1.1.1.RELEASE

1.1.0.RELEASE

v1.1.0.M1 tag

v1.0.2.RELEASE tag

Update payload-conversion sample to reference spring-xd 1.0.1.RELEASE

Update payload-conversion pom.xml to use XD 1.0 RELEASE

Update payload-conversion to reference XD RC1

Samples for the Spring XD 1.0.0 M6 release.

Samples for the XD M5 release.