Emscripten: wrap generated html into a directory (#7617)

#changelog #emscripten

Author: artificiel

libs/openFrameworksCompiled/project/emscripten/config.emscripten.default.mk

@@ -14,8 +14,8 @@
 #   ifdefs within the openFrameworks core source code.
 ################################################################################
 
-PLATFORM_PROJECT_RELEASE_TARGET = bin/$(BIN_NAME).html
-PLATFORM_PROJECT_DEBUG_TARGET = bin/$(BIN_NAME).html
+PLATFORM_PROJECT_RELEASE_TARGET = bin/$(BIN_NAME)/index.html
+PLATFORM_PROJECT_DEBUG_TARGET = bin/$(BIN_NAME)/index.html
 BYTECODECORE=1
 PLATFORM_CORELIB_DEBUG_TARGET = $(OF_CORE_LIB_PATH)/libopenFrameworksDebug.bc
 PLATFORM_CORELIB_RELEASE_TARGET = $(OF_CORE_LIB_PATH)/libopenFrameworks.bc
@@ -275,7 +275,7 @@ afterplatform: $(TARGET_NAME)
 	@echo "     compiling done"
 	@echo "     to launch the application on the default browser, run:"
 	@echo
-	@echo "     emrun bin/$(BIN_NAME).html"
+	@echo "     emrun bin/$(BIN_NAME)"
 	@echo "     "
 	@echo "     some browsers, like safari, don't support webgl"
 	@echo "     "