Merge pull request #14 from jenkinsci/SUPPORT

Create a default SUPPORT page for Jenkins

SUPPORT.md

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+Getting support for Jenkins
+===========================
+
+Jenkins is a community-driven project, and it does not provide user support in the common meaning.
+Nevertheless, there is an active community which might be able to help with the issues you experience.
+The [Jenkins JIRA](https://issues.jenkins-ci.org/secure/Dashboard.jspa) is **NOT** a support site. 
+If you need assistance or have general questions, visit us in [chat](https://jenkins.io/chat/), or email one of the user [mailing lists](https://jenkins.io/mailing-lists/).
+Also check out the main component's page for specific communication channel references.
+
+Please be aware that most Jenkins components are maintained by volunteers. 
+This means there is no guarantee of a timely response or issue resolution.
+If you want commercial support for Jenkins,
+there are companies which offer it.
+See the list on [this Wiki page](https://wiki.jenkins.io/display/JENKINS/Commercial+Support).
+Note that this list should not be viewed as endorsement by the Jenkins project, the list is provided for reference.