Update CONTRIBUTING

CONTRIBUTING

@@ -1,38 +1,9 @@
-Thanks for your interest in the Source SDK 2013 project.  When you make a
-contribution to the project (e.g. create an Issue or submit a Pull Request)
-(a "Contribution"), Valve wants to be able to use your Contribution to improve
-the SDK and other Valve products. 
-
-As a condition of providing a Contribution, you agree that: 
-- You grant Valve a non-exclusive, irrevocable, royalty-free, worldwide license
-to make, use, sell, reproduce, modify, distribute (directly and indirectly),
-and publicly display and perform the Contribution, and any derivative works
-that Valve may make from the Contribution, under any intellectual property you
-own or have the right to license. 
-- You warrant and represent that the Contribution is your original creation,
-that you have the authority to grant this license to Valve, and that this
-license does not require the permission of any third party.  Otherwise, you
-provide your Contribution "as is" without warranties.  
-
-Should you wish to submit a suggestion or work that is not your original
-creation, you may submit it to Valve separate from any Contribution,
-explicitly identifying it as sourced from a third party, stating the details
-of its origin, and informing Valve of any license or other restriction of
-which you are personally aware. 
-
-
-Valve is happy to accept pull requests and issues in the source-sdk-2013
-repository in these cases:
- * Changes that fix bugs in the SDK deployment process itself. The repository
-   should build out of the box, and anything that prevents that is a pull
-   request we want.
- * High priority bugs in HL2, the Episodes, or HL2MP that can be fixed in
-   client.dll or server.dll.
-
-For other changes we suggest that you issue a pull request to one of these
-fine community-maintained repositories instead: 
-  https://developer.valvesoftware.com/wiki/Source-sdk-2013-community-repos
-
-If you are going to make a pull request, please keep them as granular as
-possible. Pull requests with 3-4 unrelated changes in them aren't going to
-be accepted.
+Thanks for your interest in Source SDK 2013!  When you make a contribution to the Source SDK 2013, either by creating an Issue or submitting a Pull Request (a "Contribution"), Valve wants to be able to use your Contribution to improve the Source 2013 SDK and other Valve products. 
+1.	Contributions: When you provide a Contribution, please ensure it is your original creation. You agree to the following license and warranty for any Contributions you provide: 
+1.1	 You grant Valve a non-exclusive, perpetual, irrevocable, royalty-free, sublicensable, and worldwide license to make, use, sell, reproduce, modify, create derivate works, directly and indirectly distribute, publicly display, publish, transmit and perform the Contribution, and any derivative works thereof. . 
+1.2	 You represent and warrant that you are either the owner or authorized licensee of the Contribution, that you have all necessary consents to grant this license to the Contribution to Valve, and that the Contribution does not violate any third-party intellectual property rights. 
+1.3	Except as set forth in (2) above, you provide your Contribution "as is" without warranties of any kind.  
+2.	Other Materials or Suggestions: If you want to submit any materials or suggestions that are not your original work, you agree to do the following: 
+2.1	You may submit other materials or suggestions to Valve separate from any Contributions; 
+2.2	You will explicitly identify them as sourced from a third party and state the details of its origin;  and 
+2.3	You will include Valve with any third party licenses, terms, or other restrictions that apply, if you are aware of any.