Fix module ITK discovery as a remote built with Examples #19
Description
Fix the Examples/CMakeLists.txt to avoid the module asking for ITK_DIR because it couldn't find ITKConfig.cmake if built as a remote module and if the BUILD_EXAMPLES flag is set to ON.
As mentioned in #5, this brings the question about the most appropriate organization of the documentation and examples of remote modules in the way CMake builds the tree of the corresponding flags.
Some unsuccessful attempts were made in #5. Closing that PR and opening this issue to keep track of this and hopefully work to solve the issue when we can find some time.