[dco] added dco file, auto-fill-mode wrap readme content

DCO

@@ -0,0 +1,27 @@
+From http://developercertificate.org/
+
+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.

README.md

@@ -6,9 +6,14 @@
 
 ## Contributing/Development
 
-To make a good faith effort to ensure the criteria of the MIT License are met, Sensu Inc requires the Developer Certificate of Origin (DCO) process to be followed.
-
-The DCO is an attestation attached to every contribution made by every developer. In the commit message of the contribution, the developer simply adds a Signed-off-by statement and thereby agrees to the DCO, which you can find below or at http://developercertificate.org/.
+To make a good faith effort to ensure the criteria of the MIT License
+are met, Sensu Inc requires the Developer Certificate of Origin (DCO)
+process to be followed.
+
+The DCO is an attestation attached to every contribution made by every
+developer. In the commit message of the contribution, the developer
+simply adds a Signed-off-by statement and thereby agrees to the DCO,
+which you can find below or at http://developercertificate.org/.
 
 ```
 Developer's Certificate of Origin 1.1