Update gradle.properties

prepare for next version
Update README.md

codeship url, bintray download badge
Update README.md

Added a download badge
Provide a default logback.xml file
updated  to support Artifactory 3.2
version update
runtime scope fixed, groovy version upgrade
Merge branch 'master' of https://github.com/jbaruch/artifactory-client-java into jbaruch-master

Conflicts:
	README.md
Merge branch 'jbaruch-master'