Add email to git config

This fixes the error 'unable to auto-detect email address' when trying to commit.

Author: suhlig

example_app/github_repo_helper.rb

@@ -90,6 +90,7 @@ def shell_create_and_push_commit(repo_credentials, application_name)
     commands = [
         "cd #{temp_dir}; GIT_SSH=#{git_ssh_script} git clone #{repo_ssh_url} 2>&1",
         "cd #{temp_dir}/#{repo_name} && git config user.name '#{application_name}' 2>&1",
+        "cd #{temp_dir}/#{repo_name} && git config user.email '#{application_name}@example.com' 2>&1",
         "cd #{temp_dir}/#{repo_name} && git commit --allow-empty -m 'auto generated empty commit' 2>&1",
         "cd #{temp_dir}/#{repo_name} && git log --pretty=format:\"%h%x09%ad%x09%s\" 2>&1",
         "cd #{temp_dir}/#{repo_name}; GIT_SSH=#{git_ssh_script} git push origin master 2>&1"