Make simple ftp server more reusable and add params

SimpleFTP/SimpleFTP.ps1

@@ -1,16 +1,26 @@
+param (
+	[int] [alias('p')] $port = 21,
+	[string] [alias('d')] $directory = '.',
+	[bool] [alias('w')] $write = $false
+)
+
+$venv = "\.pyftplib"
+$venv = $HOME + $venv
 # Create virtual environment
-if (-not (Test-Path venv)) {
-	virtualenv venv
+if (-not (Test-Path $venv)) {
+	write-host "Creating virtual environment at $venv"
+	virtualenv "$venv"
 }
 
 # Activate virtual environment
-.\venv\Scripts\activate.ps1
+. ($venv + "\Scripts\Activate.ps1")
 
 # Install dependencies
 pip install pyftpdlib
 
 # Run FTP server
-python -m pyftpdlib
-
-# Not working for streaming video files
-# twistd -n ftp -r .
+if ($write) {
+	python -m pyftpdlib -p $port -d $directory -w
+} else {
+	python -m pyftpdlib -p $port -d $directory
+}