Change IGN_DESIGNATION to GZ_DESIGNATION (#181)

Signed-off-by: Nate Koenig <nate@openrobotics.org>
Signed-off-by: Louise Poubel <louise@openrobotics.org>

Co-authored-by: Nate Koenig <nate@openrobotics.org>
Co-authored-by: Louise Poubel <louise@openrobotics.org>

CMakeLists.txt

@@ -8,7 +8,7 @@ project(ignition-launch0 VERSION 0.2.0)
 #============================================================================
 # Find ignition-cmake
 #============================================================================
-find_package(ignition-cmake2 REQUIRED)
+find_package(ignition-cmake2 VERSION 2.13 REQUIRED)
 set(IGN_CMAKE_VER ${ignition-cmake2_VERSION_MAJOR})
 
 #============================================================================
@@ -20,7 +20,7 @@ ign_configure_project()
 # Set project-specific options
 #============================================================================
 
-set(IGN_LAUNCH_PLUGIN_INSTALL_PATH "${CMAKE_INSTALL_PREFIX}/${IGN_LIB_INSTALL_DIR}/ign-${IGN_DESIGNATION}-${PROJECT_VERSION_MAJOR}/plugins/")
+set(IGN_LAUNCH_PLUGIN_INSTALL_PATH "${CMAKE_INSTALL_PREFIX}/${IGN_LIB_INSTALL_DIR}/ign-${GZ_DESIGNATION}-${PROJECT_VERSION_MAJOR}/plugins/")
 
 #============================================================================
 # Search for project-specific dependencies