refactoring

- keep using find-exec (more bin files)
- parse_convert command with spaces works

Makefile

@@ -7,15 +7,18 @@ all:
 	@echo Compiled
 
 install: all
-	@echo Installing zod executable to ${PREFIX}/bin
+	@echo Installing zod executables to ${PREFIX}/bin
 	@mkdir -p ${PREFIX}/bin
 	@cp bin/zod ${PREFIX}/bin
+	@cp bin/zod-render ${PREFIX}/bin
+	@cp bin/zod-copy ${PREFIX}/bin
+	@cp bin/zod-internal ${PREFIX}/bin
 	@echo Installing awk lib files to ${AWKLIB}
 	@mkdir -p ${AWKLIB}
 	@cp lib/render.awk ${AWKLIB}
 	@cp lib/markdown.awk ${AWKLIB}
 	@cp lib/config.awk ${AWKLIB}
-	@cp lib/opt_builder.awk ${AWKLIB}
+	@cp lib/find_cmd.awk ${AWKLIB}
 	@echo Installation Complete
 
 uninstall: