psh_inject_meterpreter

This will have the client download a meterpreter psh command from a web server.
It will then inject its self into memory without touching disk bypassing all AV.
You can host the psh command yourself using http/https or on another server.
A self-sign cert has been added to the yml file and can be replaced with any cert and
key.  I have also started a Server class that can be used for web clients, and a raw
socket for uploading files.
Fixes

reverted exec_powershell to original code
added new class for meterp injection
made fixes per smilingraccoon
Default url for webserver

if the url is left empty it defaults to https://#{local_ip}:8080
Added generate ssl cert in options

fixed quick issue in server class it was == now is =
Little Fix

change from starting to started
stripped /n from filename
Updated Create Cert & New rgets

Cert now is created and back space works thanks to smilingraccoon
Using the new rgets
removed results since this mod wont produce any
Pull request #68 merged
minor tweaks to meet smbexec coding practices