feat(slam): add cartographer_ros

cartographer_ros/docs/source/getting_involved.rst

@@ -0,0 +1,35 @@
+.. Copyright 2018 The Cartographer Authors
+
+.. Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+..      http://www.apache.org/licenses/LICENSE-2.0
+
+.. Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+================
+Getting involved
+================
+
+Cartographer is developed in the open and allows anyone to contribute to the project.
+There are multiple ways to get involved!
+
+If you have question or think you've found an issue in Cartographer, you are welcome to open a `GitHub issue`_.
+
+.. _GitHub issue: https://github.com/cartographer-project/cartographer/issues
+
+If you have an idea of a significant change that should be documented and discussed before finding its way into Cartographer, you should submit it as a pull request to `the RFCs repository`_ first.
+Simpler changes can also be discussed in GitHub issues so that developers can help you get things right from the first try.
+
+.. _the RFCs repository: https://github.com/cartographer-project/rfcs
+
+If you want to contribute code or documentation, this is done through `GitHub pull requests`_.
+Pull requests need to follow the `contribution guidelines`_.
+
+.. _GitHub pull requests: https://github.com/cartographer-project/cartographer/pulls
+.. _contribution guidelines: https://github.com/cartographer-project/cartographer/blob/master/CONTRIBUTING.md