Printing a message if the installer is already available.

script/ci_install.sh

@@ -17,6 +17,9 @@ then
     curl -sSL https://cmake.org/files/v3.8/cmake-3.8.2-Linux-x86_64.sh -o ${CMAKE_INSTALLER}
     chmod +x ${CMAKE_INSTALLER}
     sudo ./install-cmake.sh --prefix=/usr/local --skip-license
+
+else
+    echo "CMake installer available"
 fi
 
 cd ${BUILD_DIR}