Added vm docker create, SetVmExtension and GetVMExtension commands.  Pt. 1

Added vm docker create, SetVmExtension and GetVMExtension commands.  Pt.
1
Added vm docker create, SetVmExtension and GetVMExtension commands. Pt. 2

Added vm docker create, SetVmExtension and GetVMExtension commands.  Pt.
2
Removed logger from virtual machine operations
Fixed bugs in vm docker create command
Fixed authentication using ssh thumbprint

Fixed authentication using ssh thumbprint
Commented role printing in CreateRole method

Commented role printing in CreateRole method
Fixed bug with throwing error in generate certificates method

Fixed bug with throwing error in generate certificates method
Changed cert permissions

Changed cert permissions
Update README.md

Added Docker section
Merge branch 'docker' of https://github.com/hopetobelievein/azure-sdk-tools-xplat into docker