fixed contribution guidelines

Author: martinwicke

CONTRIBUTING.md

@@ -1,16 +1,17 @@
 # Contributing guidelines
 
 If you have created a model and would like to publish it here, please send us a
-pull request. The code for any model in this repository is licensed under the
-Apache License 2.0.
+pull request. For those just getting started with pull reuests, GitHub has a
+[howto](https://help.github.com/articles/using-pull-requests/).
+
+The code for any model in this repository is licensed under the Apache License
+2.0.
 
 In order to accept our code, we have to make sure that we can publish your code:
 You have to sign a Contributor License Agreement (CLA).
 
 ### Contributor License Agreements
 
-We'd love to accept your patches! Before we can take them, we have to jump a couple of legal hurdles.
-
 Please fill out either the individual or corporate Contributor License Agreement (CLA).
 
   * If you are an individual writing original source code and you're sure you own the intellectual property, then you'll need to sign an [individual CLA](http://code.google.com/legal/individual-cla-v1.0.html).
@@ -20,15 +21,3 @@ Follow either of the two links above to access the appropriate CLA and instructi
 
 ***NOTE***: Only original source code from you and other people that have signed the CLA can be accepted into the repository.
 
-### Contributing code
-
-If you have improvements to TensorFlow, send us your pull requests! For those
-just getting started, Github has a [howto](https://help.github.com/articles/using-pull-requests/).
-
-If you want to contribute but you're not sure where to start, take a look at the
-[issues with the "contributions welcome" label](https://github.com/tensorflow/tensorflow/labels/contributions%20welcome).
-These are issues that we believe are particularly well suited for outside
-contributions, often because we probably won't get to them right now. If you
-decide to start on an issue, leave a comment so that other people know that
-you're working on it. If you want to help out, but not alone, use the issue
-comment thread to coordinate.