fix stuff

README

@@ -4,13 +4,13 @@ A library which provides a random string generation function.
 
 + Usage
 
-	#include <libecrypt.h>
+	#include <ecrypt.h>
 
 	int main() {
-		ecrypt(PASSWD_LENGTH);
+		ecrypt(LENGTH);
 	}
 
-	(user)$ gcc prog.c -L. -lecrypt -o prog
+	(user)$ gcc prog.c -lecrypt -o prog
 
 + Installation