fixed bugs in thumbnail generation of downsampled images
extended documentation for CXI skeleton for downsampled images
change cmake default paths /opt to /davinci
asks for username on psexport, important if executed by root
asks for username on psexport, important if executed by root
more accurate pnccd geometry
check for overflow during downsampling, clip in case.
check for overflow during downsampling (2)
new simple processing script
Curr. hitrate printed with every processed event
Merge branch 'anton' into developer
cheetah configuration, event variables and powder stored to CXI file
Merge branch 'developer' of github.com:antonbarty/cheetah into developer
moved cmake directory back up to the top level

cmake directory doesn't really belong in source as it is used during
the build configuration.
Revert "moved cmake directory back up to the top level"

This reverts commit 4aa06dcf90d320c96dccbff431bc5d87c8e36f24.
ignore build directory in git
Use OPTION Command instead of SET

A variable defined in an option command appears as a boolean choice in
the CMake GUI or when running CMake interactively using cmake -i.
Added missing geometry file
moved cmake build files back up to the top level as per convention
Modified CMakeList.txt files to follow new structure.