Add install target to makefile

Makefile

@@ -1,3 +1,4 @@
+LIBDIR=`erl -eval 'io:format("~s~n", [code:lib_dir()])' -s init stop -noshell`
 APP_NAME="merle"
 VSN="0.1"
 
@@ -6,7 +7,6 @@ all: compile
 docs: 
 	erl -noshell -run edoc_run application "'$(APP_NAME)'" '"."' '$(VSN)' -s init stop
 
-
 compile:
 	@mkdir -p ebin
 	@erl -make
@@ -17,3 +17,7 @@ clean:
 
 test: all
 	prove -v t/*.t
+
+install: all
+	mkdir -p ${LIBDIR}/${APP_NAME}-${VSN}/ebin
+	for i in ebin/*.beam; do install $$i $(LIBDIR)/${APP_NAME}-${VSN}/$$i ; done