feature: add commit message format to handle release note smarter (#616)

* feature: add commit message format to handle release note smarter

* collect skiping release note flow

Author: KazuCocoa

Rakefile

@@ -212,7 +212,7 @@ task :notes do
       hex     = line.match(/[a-zA-Z0-9]+/)[0]
       # use first 7 chars to match GitHub
       comment = line.gsub(hex, '').strip
-      next if comment == 'Update release notes'
+      next if skip_release_note?(comment)
 
       issue_num = comment.slice(/\(#[0-9]+\)/)
       # If the issue_num is pull request, GitHub redirects to the pull request.
@@ -222,6 +222,7 @@ task :notes do
                      else
                        comment
                      end
+
       new_data += "- [#{hex[0...7]}](https://github.com/appium/#{gh_name}/commit/#{hex}) #{comment_note}\n"
     end
     data  = new_data + "\n"
@@ -233,6 +234,13 @@ task :notes do
   File.open('release_notes.md', 'w') { |f| f.write notes.to_s.strip }
 end
 
+# Return true if the comment is equal to 'Update release notes'
+# Return true if the comment starts with /^(docs|style|chore):/
+def skip_release_note?(comment)
+  return true if comment == 'Update release notes'
+  comment =~ /^(docs|style|chore|test):/ ? true : false
+end
+
 # Used to purge byte order marks that mess up YARD
 def remove_non_ascii
   Dir.glob('./**/*.rb') do |path|

contributing.md

@@ -22,7 +22,20 @@ Android tests require running on physical hardware with Android 5.0 (API 21). Th
 - `cd android_tests`
 - `flake 3 android` - Run all the Android tests up to 3 times
 
-### Publishing
+## Commit Message Format
+- `#{type}: some commit messages`
+- `docs`, `style`, `test` and `chore` are ignored when generating release note with `rake release`.
+
+### Type
+- `feature`: A new feature
+- `fix`: A bug fix
+- `docs`: Documentation only changes
+- `style`: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
+- `refactor`: A code change that neither fixes a bug nor adds a feature
+- `test`: Adding missing or correcting existing tests
+- `chore`: Changes to the build process or auxiliary tools and libraries such as documentation generation
+
+## Publishing
 
 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 >