Add description of CMakeLists.txt files for simulators/projects that use the KIM-API library and use CMake.
Add description of getting build details via pkg-config for simulators/projects that use the KIM-API library but do not use CMake.
influenceDistance. (or link to docs elsewhere?) influenceDistance (or link to docs elsewhere?) influenceDistance (or link to docs elsewhere?) influenceDistance (or link to docs elsewhere?)