Updated README.md and CONTRIBUTING.md

CONTRIBUTING.md

@@ -46,7 +46,7 @@ In addition to these two branches, there may be arbitrarily many feature branche
 
 
 ### Contributing
 ### Contributing
 
 
-Bug fixes, extensions, etc. can be contributed as pull requests via GitHub or as patches via the development mailing list (mailto:embb-dev@googlegroups.com). If possible, please refer to a current snapshot of the master branch.
+Bug fixes, extensions, etc. can be contributed as pull requests via GitHub (preferred way to involve the community) or as patches via mail (mailto:embb.info@gmail.com). If possible, refer to a current snapshot of the master branch.
 
 
 ### Porting
 ### Porting
 
 

README.md

@@ -23,11 +23,9 @@ Repository:
   - https://github.com/siemens/embb.git (HTTP)
   - https://github.com/siemens/embb.git (HTTP)
   - git@github.com:siemens/embb.git (SSH)
   - git@github.com:siemens/embb.git (SSH)
 
 
-Mailing lists:
+Mailing list:
   - embb-announcements@googlegroups.com (announcements)<br/>
   - embb-announcements@googlegroups.com (announcements)<br/>
     https://groups.google.com/forum/#!forum/embb-announcements/join
     https://groups.google.com/forum/#!forum/embb-announcements/join
-  - embb-dev@googlegroups.com (development)<br/>
-    https://groups.google.com/forum/#!forum/embb-dev/join
 
 
 Contact:
 Contact:
   - embb.info@gmail.com
   - embb.info@gmail.com