PHP API to export shipping method #1904

This patch will add new api feature to export shipping methods from
magento

Review ID: 234001
Merge pull request #3 from tarunbhardwaj/feature/task-1904

PHP API to export shipping method #1904
Release version 1.4.0
Merge pull request #4 from shalabhaggarwal/develop

Release version 1.4.0