minor improvements

Author: sy-c

example/CMakeLists.txt

@@ -1,7 +1,8 @@
 # minimal cmake example for InfoLogger library
 # typical command:
-# cmake3 -DInfoLogger_DIR=path/to/infologger/lib .. 
+# cmake -DInfoLogger_DIR=path/to/infologger/lib/cmake/InfoLogger  .. 
 
-find_package(InfoLogger)
+find_package(InfoLogger REQUIRED)
+set(CMAKE_CXX_STANDARD 14)
 add_executable(exampleLog exampleLog.cxx)
 target_link_libraries(exampleLog AliceO2::InfoLogger)