add option to tmxrasterizer to include the layer named "collision"
fixed tabs vs spaces
change command-line options to better control layer visibility
make --hide-layer case-insensitive
Merge pull request #639 from gauauu/includeCollisions

Option to include collision layer in tmxrasterizer
Added missing command line arguments to manpage
Fixed typo in help string of tmxrasterizer
Merge pull request #643 from Ablu/manpage_update

Manpage update