Merge pull request #5 from Expensify/mcnamamj

Update expensify_export to use new JSON format.
Merge pull request #6 from Expensify/mcnamamj

data-urlencode to prevent + from turning into spaces. - merging
Merge pull request #7 from Expensify/mcnamamj

Update documentation for Integrations.
Add some expense/report payroll and GL Code info

Add:

* `expense.categoryGlCode`
* `expense.categoryPayrollCode`
* `expense.tagGlCode`
* `report.managerPayrollID`
* `report.submitterPayrollID`
Update expensify_export.sh with onFinish new format.
Fix quotes in expensify_export.sh
Remove line trim for Curl template parameter
Merge pull request #8 from Expensify/francoisFixNewLineTemplate

Keep \n's for Curl template parameter
Support old versions of curl and better hostname support