Move common image files to pcl/io/ during the installation; fix block alignments.

[fralik]

This is related to issue #6 and some comments you got on PointCloudLibrary#276. It installs common image* files in pcl/io.

Also fixed alignment of blocks inside CMakeLists.txt and replaced TAB characters by spaces.

[kwaegel]

You changed the line
PCL_ADD_INCLUDES("${SUBSYS_NAME}" "${SUBSYS_NAME}/openni2" ${OPENNI2_INCLUDES})
to
PCL_ADD_INCLUDES("${SUBSYS_NAME}" "${SUBSYS_NAME}/openni2_camera" ${OPENNI2_INCLUDES})
when the source folder is still io/openni. Is this going to cause problems?

The Travis CI build failed, but it looks like an internal compiler error and not related to your changes.

[fralik]

That's the opposite: I changed from openni2_camera to openni2. This deals with how files are installed. This is exactly the first comment of issue #6

As for the Travis CI I also could not connect the failure with my changes.