Prevent logs in commandExistsWindowsSync. fix #18
Prevent logs in commandExistsWindowsSync. fix #18

The default value of `stdio.options` in `execSync` is 'pipe'. That is *supposed* to be equivalent to `['pipe', 'pipe', 'pipe']`. 
In reality there seems to be a difference here - using the default (or 'pipe') results in the extra log. Using an array solves the issue.
mathisonian/command-exists