Fix error when building an app with old version of support library

Author: jeremytoudic

lib/fastlane/plugin/commit_android_version_bump/actions/commit_android_version_bump_action.rb

@@ -10,9 +10,11 @@ def self.run(params)
         app_folder_name ||= params[:app_folder_name]
         UI.message("The commit_android_version_bump plugin is looking inside your project folder (#{app_folder_name})!")
 
-        build_folder_paths = Dir[File.expand_path(File.join('**/',app_folder_name))]
+        build_folder_paths = Dir[File.expand_path(File.join('**/',app_folder_name))].reject { |file| file.include?('build/') }
         # no build.gradle found: error
         UI.user_error!('Could not find a build folder in the current repository\'s working directory.') if build_folder_paths.count == 0
+
+        UI.message("Found the following project path: #{build_folder_paths}")
         # too many projects found: error
         if build_folder_paths.count > 1
             UI.user_error!("Found multiple build.gradle projects in the current repository's working directory.")