Update README instructions

+ Fix incorrect library name for `algorithms/trees/BST` example
+ Update root CMakeLists.txt for major directories to set binary path
+ Add instructions to install CMake LTS with pip

cpp/algorithms/graphs/CMakeLists.txt

@@ -15,6 +15,8 @@ project (
     LANGUAGES   CXX
 )
 
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+
 add_subdirectory(object)
 add_subdirectory(simple)
 add_subdirectory(templated)