conan: move include to conan package namespace

Author: Elazar Leibovich

CMakeLists.txt

@@ -9,4 +9,4 @@ if(BUILD_TESTING)
     add_subdirectory(test)
 endif()
 
-install(FILES subprocess.hpp DESTINATION include/subprocess/)
+install(FILES subprocess.hpp DESTINATION include/cpp-subprocess/)

README.md

@@ -22,7 +22,7 @@ and they will be fixed as they are reported.
 Subprocess library has just a single source `subprocess.hpp` present at the top directory of this repository. All you need to do is add
 
 ```cpp
-#inlcude "subprocess.hpp"
+#inlcude "cpp-subprocess/subprocess.hpp"
 
 using namespace subprocess;
 // OR