Adding full text of DCO

Signed-off-by: Lucas A. Wilson <luke.wilson@dell.com>

CONTRIBUTING.md

@@ -41,7 +41,49 @@ Contributions to Omnia are made through [Pull Requests (PRs)](https://help.githu
       3. How the changes solves the problem, and
       4. How to verify that the changes work correctly.
    
-### Omnia Branches and Contribution Flow
+## Omnia Branches and Contribution Flow
 The diagram below describes the contribution flow. Omnia has two lifetime branches: `devel` and `master`. The `master` branch is reserved for releases and their associated tags. The `devel` branch is where all development work occurs. The `devel` branch is also the default branch for the project.
 
 ![Omnia Branch Flowchart](docs/images/omnia-branch-structure.png "Flowchart of Omnia branches")
+
+## Developer Certificate of Origin
+Contributions to Omnia must be signed with the [Developer Certificate of Origin (DCO)](https://developercertificate.org/):
+```
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+1 Letterman Drive
+Suite D4700
+San Francisco, CA, 94129
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+
+Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I
+    have the right to submit it under the open source license
+    indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best
+    of my knowledge, is covered under an appropriate open source
+    license and I have the right under that license to submit that
+    work with modifications, whether created in whole or in part
+    by me, under the same open source license (unless I am
+    permitted to submit under a different license), as indicated
+    in the file; or
+
+(c) The contribution was provided directly to me by some other
+    person who certified (a), (b) or (c) and I have not modified
+    it.
+
+(d) I understand and agree that this project and the contribution
+    are public and that a record of the contribution (including all
+    personal information I submit with it, including my sign-off) is
+    maintained indefinitely and may be redistributed consistent with
+    this project or the open source license(s) involved.
+```