Adds cmake to project

[JeffHough]

Thank you for putting this stl_reader together! It is working great for my needs.

Although this project is already quite simple to consume, a lot of people prefer to consume all of the dependencies through cmake. I restructured things slightly to put the header file under include/stl_reader, and added a CMakeLists.txt. This way, the stl_reader can be packaged using the usual

mkdir build && cd build
cmake ..
cmake --build .
sudo cmake --install . --prefix /some/install/prefix

This project can then be included in their other project's CMakeLists.txt file using:

find_package(stl_reader REQUIRED)
...
target_link_libraries(some_library
PUBLIC
stl_reader::stl_reader # gets included as if it were a library
)

And the header file will be available using #include <stl_reader/stl_reader.h> in any file of the consumer.

[sreiter]

Hi Jeff,

thanks a lot for creating those scripts and putting the pull request up. Really appreciated!
I will take a closer look and will get back to you.

Thanks and best regards,
Sebastian