Set modified CommandCenter as default startup project in VS

CMakeLists.txt

-cmake_minimum_required (VERSION 3.1)
+cmake_minimum_required (VERSION 3.6)
 project (starcraft-python-api)
 
-set(EXECUTABLE_OUTPUT_PATH bin)
-
 # Build with C++14 support, required by sc2api
 set(CMAKE_CXX_STANDARD 14)
 
@@ -26,4 +24,6 @@ set_target_properties(sc2renderer PROPERTIES COMPILE_FLAGS "/W4")
 set_target_properties(sc2utils PROPERTIES COMPILE_FLAGS "/W3")
 set_target_properties(sc2protocol PROPERTIES COMPILE_FLAGS "/W0")
 
+set_property(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY VS_STARTUP_PROJECT CommandCenter)
+
 pybind11_add_module(library library.cxx)