Move all variables to constants.rb

Add example file to git

.gitignore

@@ -1 +1,2 @@
 output.txt
+constants.rb

changelog_generator.rb

@@ -3,14 +3,7 @@
 
 require 'github_api'
 require 'json'
-
-@project_path = '/Users/petrkorolev/repo/ActionSheetPicker-3.0'
-
-@github_user = 'skywinder'
-@github_repo_name = 'ActionSheetPicker-3.0'
-
-tag1 = '1.1.21'
-tag2 = '1.2.0'
+require_relative 'constants'
 
 def print_json(json)
   puts JSON.pretty_generate(json)
@@ -44,8 +37,13 @@ end
 
 
 def getAllClosedPullRequests
-  github = Github.new oauth_token: '8587bb22f6bf125454768a4a19dbcc774ea68d48'
-  issues = github.pull_requests.list 'skywinder', 'ActionSheetPicker-3.0', :state => 'closed'
+
+  if @oauth_token.length
+    github = Github.new oauth_token: @oauth_token
+  else
+    github = Github.new
+  end
+    issues = github.pull_requests.list @github_user, @github_repo_name, :state => 'closed'
     json = issues.body
 
     json.each { |dict|
@@ -54,8 +52,8 @@ def getAllClosedPullRequests
     }
 
     json
-end
 
+end
 
 def compund_changelog(tag_time, pull_requests)
   log = ''
@@ -84,5 +82,4 @@ pull_requests.delete_if { |req|
   t < tag_time
 }
 
-
-compund_changelog(tag_time, pull_requests)
+compund_changelog tag_time, pull_requests

dummy_constants.rb

@@ -0,0 +1,4 @@
+@project_path = '/path/to/project'
+@github_user = 'login'
+@github_repo_name = 'projectName'
+@oauth_token = 'your40digitGitHubToken'