Note DCO requirement.

Fix some typos.

No issue #

Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tclegg@veritasgenetics.com>

diff --git a/README.md b/README.md
index f5940da543678d1b850e5984f7d8c7ce73d4c7b2..c480ffda4cca9c5141e954c75bbc41c35fd67b67 100644 (file)
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@ doc/README.textile for instructions.
 
 ## Community
 
 
 ## Community
 

-The [#arvados](irc://irc.oftc.net:6667/#arvados IRC) (Internet Relay Chat)
+The [#arvados](irc://irc.oftc.net:6667/#arvados) IRC (Internet Relay Chat)

 channel at the
 [Open and Free Technology Community (irc.oftc.net)](http://www.oftc.net/oftc/)
 is available for live discussion and support.  You can use a traditional IRC
 channel at the
 [Open and Free Technology Community (irc.oftc.net)](http://www.oftc.net/oftc/)
 is available for live discussion and support.  You can use a traditional IRC


@@ -58,7 +58,7 @@ is a forum for general discussion, questions, and news about Arvados
 development.  The
 [Arvados developer mailing list](http://lists.arvados.org/mailman/listinfo/arvados-dev)
 is a forum for more technical discussion, intended for developers and
 development.  The
 [Arvados developer mailing list](http://lists.arvados.org/mailman/listinfo/arvados-dev)
 is a forum for more technical discussion, intended for developers and

-contributers to Arvados.
+contributors to Arvados.

 
 ## Development
 
 
 ## Development
 


@@ -73,6 +73,10 @@ Instructions for setting up a development environment and working on specific
 components can be found on the
 ["Hacking Arvados" page of the Arvados wiki](https://dev.arvados.org/projects/arvados/wiki/Hacking).
 
 components can be found on the
 ["Hacking Arvados" page of the Arvados wiki](https://dev.arvados.org/projects/arvados/wiki/Hacking).
 

+## Contributing
+
+When making a pull request, please ensure *every git commit message* includes a one-line [Developer Certificate of Origin](https://dev.arvados.org/projects/arvados/wiki/Developer_Certificate_Of_Origin). If you have already made commits without it, fix them with `git commit --amend` or `git rebase`.
+

 ## Licensing
 
 Arvados is Free Software.  See COPYING for information about Arvados Free
 ## Licensing
 
 Arvados is Free Software.  See COPYING for information about Arvados Free