add jenkins-slave-chef-pull-requests

This task will test pull requests for the jenkins-slave-chef repository
by running "rake".
Merge pull request #18 from ktdreyer/readme-updates

README updates
Merge pull request #17 from ktdreyer/jenkins-slave-chef-pull-requests

add jenkins-slave-chef-pull-requests
use the newly jjb-able ceph-deploy

Signed-off-by: Alfredo Deza <alfredo@deza.pe>
add artifact publishers

Signed-off-by: Alfredo Deza <alfredo@deza.pe>
fix indentation

Signed-off-by: Alfredo Deza <alfredo@deza.pe>
doc: add steps for testing changes
jenkins-slave-chef-pull-requests: fix YAML syntax

The YAML syntax for the github-pull-request portion of the
cjenkins-slave-chef-pull-requests job was incorrect; use the correct
syntax.
doc: improve RST syntax in "testing changes"

RST expects double backticks, not single ones.
doc: capitalize titles
doc: add "naming conventions" section