Release v0.3.0

Added

• Now functions correctly in Windows. Tested in Windows 10 x64.

• Support for --input and --output options containing Windows paths that have spaces.
  `

  batch-transcode-video --input my videos --output other folder\temp
  `

• Generate an error for unknown options.

  > batch-transcode-video --hat --debug
  ERROR   Unrecognized command --hat provided.
  If you would like to supply custom options to transcode-video then put
  them at end of the command after a double dash "--". For example to pass
  the  "--dry-run" command to transcode-video:
  
  batch-transcode-video --input my_videos/ -- --dry-run
  

• Added --help option to view the manual in the terminal.

Fixed

• Capture child process error events. Previously unhandled errors (e.g. ENOENT) when spawning child processes.
• Support absolute source paths for --input and --output options.