Get XSD2PHP via Composer

[jterrill]

Upgrade XSD2PHP package to composer based.

Closes #362

Change Overview:

• Identified repo for XSD2PHP
  • Original is gone
  • https://github.com/elliotchance/XSD2PHP
• Identified latest matching version of current embedded version
  • v2.0.5-alpha (v2 was last drop)
• Added to composer.json
  • "elliotchance/intuit-quickbooks":"^v2.0.5-alpha"
• Updated compose to pull down asset to vendor directory
• composer update
• Deleted embedded version of xsd2php
• Changed namespace to proper version
  • QuickBooksOnline\API\XSD2PHP\src\com\mikebevz
  • use com\mikebevz\xsd2php\Php2Xml;
• Verify code is Similar

Note: this library no longer appears to be maintained, this is a capture from last known version.

[jterrill]

@abisalehalliprasan Can you add the hacktoberfest lable to this?

[abisalehalliprasan]

@jterrill : Thanks for the contribution 🚀 . Could you provide an overview of what were the changes so that it would help us break it down?

Yes I shall add the hacktoberfest label once we start reviewing . Thanks for your contribution again.

[jterrill]

I updated what I did, it is slightly better to pull this in via composer than having it embedded. Original code / site for this is no longer available.