Use CMAKE_INSTALL_BINDIR instead of hardcoded path

CMakeLists.txt

@@ -58,5 +58,5 @@ qt5_create_translation(QM_FILES ${TS_FILES})
 add_custom_target(translations DEPENDS ${QM_FILES} SOURCES ${TS_FILES})
 add_dependencies(${PROJECT_NAME} translations)
 
-install(TARGETS ${PROJECT_NAME} RUNTIME DESTINATION /usr/bin)
+install(TARGETS ${PROJECT_NAME} RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
 install(FILES ${QM_FILES} DESTINATION /usr/share/${PROJECT_NAME}/translations)

README.md

@@ -15,7 +15,7 @@ You also need [`fishui`](https://github.com/cutefishos/fishui) and [`libcutefish
 ```
 mkdir build
 cd build
-cmake ..
+cmake -DCMAKE_INSTALL_PREFIX:PATH=/usr ..
 make
 sudo make install
 ```