Summary
    Opens the file for writing. This will either create the file
    if it doesn't exist or overwrite it if it does.
    
		- Assembly
 - Wyam
.Testing .dll  - Namespace
 - Wyam
.Testing .IO  - Containing Type
 - TestFile
 
Syntax
public Stream OpenWrite(bool createDirectory = true)
	Parameters
| Name | Type | Description | 
|---|---|---|
| createDirectory | bool | Will create any needed directories that don't already exist if set to true. | 
					
Return Value
| Type | Description | 
|---|---|
| Stream | The stream. | 
