Create ProvisionSQLDwIaasVM.ps1

This script allows a user to create a Data warehousing optimized VM on Azure running SQL Server 2012 or SQL Server 2014, script will also attach empty disks to the VM to be used for Sql Server data and log files.
Attached disks are 1023GB each, size is not configurable, Azure subscriber will only get build for used capacity. 
Geo replication is not supported.
Create ProvisionSQLDwIaasVM_DwIaasConfigGeneral.xml

XML file used by ProvisionSQLDwIaasVM.ps1.
Has the number of disks to instance size mapping.
Create _ProvisionSQLDwIaasVM.md
Rename ProvisionSQLDwIaasVM.ps1 to New-AzureSqlDwIaasVM.ps1

Changing file name.
Rename ProvisionSQLDwIaasVM_DwIaasConfigGeneral.xml to New-AzureSqlDwIaasVM_DwIaasConfigGeneral.xml
Rename _ProvisionSQLDwIaasVM.md to _New-AzureSqlDwIaasVM.md
Update New-AzureSqlDwIaasVM.ps1
Update _New-AzureSqlDwIaasVM.md
Update _New-AzureSqlDwIaasVM.md
Update New-AzureSqlDwIaasVM.ps1
Merge pull request #40 from MostafaMokhtar/master

New-AzureSqlDwIaasVM.ps1 is used to deploy a SQL IAAS VM optimized for Data warehousing. Additionally it will attach empty Azure disks to the VM.