Add Github templates and bot (#276)

.github/ISSUE_TEMPLATE.md

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+### Description
+
+Overview of your issue here.
+
+### Your environment
+* ROS Distro: [Indigo|Jade|Kinetic]
+* OS Version: e.g. Ubuntu 16.04
+* Source or Binary build?
+* If binary, which release version?
+* If source, which git commit or tag?
+
+### Steps to reproduce
+Tell us how to reproduce this issue. Attempt to provide a working demo, perhaps using Docker.
+
+### Expected behaviour
+Tell us what should happen
+
+### Backtrace or Console output
+
+Use [gist.github.com](gist.github.com) to copy-paste the console output or segfault backtrace using gdb.

.github/PULL_REQUEST_TEMPLATE.md

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+### Description
+
+Please explain the changes you made, including a reference to the related issue if applicable
+
+### Checklist
+- [ ] **Required by CI**: Code is auto formatted using [clang-format](http://moveit.ros.org/documentation/contributing/code)
+- [ ] While waiting for someone to review your request, please consider reviewing [another open pull request](https://github.com/ros-planning/moveit/pulls) to support the maintainers
+
+[//]: # "You can expect a response from a maintainer within 7 days. If you haven't heard anything by then, feel free to ping the thread. Thank you!"

.github/config.yml

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+# Configuration for welcome - https://github.com/behaviorbot/welcome
+
+# Configuration for new-issue-welcome - https://github.com/behaviorbot/new-issue-welcome
+
+# Comment to be posted to on first time issues
+newIssueWelcomeComment: >
+  Thanks for reporting an issue. We will have a look asap.
+  If you can think of a fix, please consider providing it as a pull request.
+
+# Configuration for new-pr-welcome - https://github.com/behaviorbot/new-pr-welcome
+
+# Comment to be posted to on PRs from first time contributors in your repository
+newPRWelcomeComment: >
+  Thanks for helping in improving MoveIt!
+
+# Configuration for first-pr-merge - https://github.com/behaviorbot/first-pr-merge
+
+# Comment to be posted to on pull requests merged by a first time user
+firstPRMergeComment: >
+  Congrats on getting your first MoveIt! pull request merged and improving open source robotics!
+
+# It is recommended to include as many gifs and emojis as possible!