Revise for rename to cli & phony target (thanks Gergely)

Makefile

@@ -1,13 +1,16 @@
-all: cli
+all:
+	dune build
 
 cli:
-	dune build app/logarion_cli.exe
+	dune build cli/cli.exe
 
 clean:
 	dune clean
 
 tgz:
-	cp _build/default/app/logarion_cli.exe logarion
+	cp _build/default/cli/cli.exe logarion
 	strip logarion
 	tar czvf "logarion-$(shell date -r _build/default/src/logarion_cli.exe "+%y-%m-%d")-$(shell uname -s)-$(shell uname -m)-$(shell git rev-parse --short HEAD).tar.gz" share logarion
 	rm logarion
+
+.PHONY: cli