added DSL methods to generate List Views
add CONTRIBUTING.md.
Merge pull request #146 from sheehan/contributing

add CONTRIBUTING.md.
added a section about code style
CRLF at the end of a file
Merge pull request #107 from jenkinsci/views

Views
added default parameters for filterBuildQueue and filterExecutors
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' of https://github.com/JeremyMarshall/job-dsl-plugin