Adds notes about contributing

CONTRIBUTING.md

@@ -0,0 +1,11 @@
+Contributing
+---
+
+The issue tracker is at [github.com/CartoDB/CartoDB-SQL-API](https://github.com/CartoDB/CartoDB-SQL-API).
+
+We love pull requests from everyone, see [Contributing to Open Source on GitHub](https://guides.github.com/activities/contributing-to-open-source/#contributing).
+
+
+## Submitting Contributions
+
+* You will need to sign a Contributor License Agreement (CLA) before making a submission. [Learn more here](https://cartodb.com/contributing).

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2014, Vizzuality
+Copyright (c) 2015, CartoDB
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without 

README.md

@@ -66,3 +66,8 @@ If any issue arise see test/README.md
 
 Note that the environment should be set to ensure the default
 PostgreSQL user is superuser (PGUSER=postgres make check).
+
+Contributing
+---
+
+See [CONTRIBUTING.md](CONTRIBUTING.md).