add some guidelines

Author: KazuCocoa

.github/contributing.md

@@ -0,0 +1,23 @@
+# Contributing
+
+For features or bug fixes, please submit a pull request. Ideally there would be a test as well. The remainder of this doc details how to run the tests.
+
+## Tests
+### Unit Tests
+- `rake test:unit` run on Travis automatically
+
+### Functional Tests
+- iOS
+    - `rake test:func:ios`
+- Android
+    - `rake test:func:android`
+
+## Publishing on rubygems
+
+0. Ensure you have `~/.gem/credentials` If not run [the following command](http://guides.rubygems.org/make-your-own-gem/) (replace username with your rubygems user)
+> $ curl -u username https://rubygems.org/api/v1/api_key.yaml >
+~/.gem/credentials; chmod 0600 ~/.gem/credentials
+
+1. Bump the version number `thor bump`
+2. Generate release note, build and publish gem with `thor release`
+3. Update `changelog.md`

.github/issue_template.md

@@ -0,0 +1,20 @@
+## This is a
+* [ ] Bug report
+* [ ] Question
+* [ ] Feature Request
+
+## Summary
+
+## Environment
+* `ruby_lib_core` version:
+* Mobile platform/version/device under test:
+
+## Actual behaviour and steps to reproduce
+
+## Expected behaviour
+
+## Link to Appium/Ruby logs
+
+Create a [GIST](https://gist.github.com) which is a paste of your _full_ Appium logs, and link them here. 
+
+## Any additional comments

CHANGELOG.md

@@ -3,6 +3,7 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 ### Enhancements
+- Add guidelines in `.github`
 
 ### Bug fixes