Make port configurable via args

README.md

@@ -5,7 +5,7 @@ Shitty key-value store in C inspired by Redis.
 ## Usage
 
     $ make
-    $ bin/shitdb
+    $ bin/shitdb [port]
 
 Example session:
 

bin/shitdb.c

@@ -1,12 +1,26 @@
 #include <shitdb/db.h>
 #include <shitdb/server.h>
+
 #define DEFAULT_PORT 4999
 
+static int
+resolve_port(int argc, char **argv)
+{
+  int port = 0;
+  if(argc == 2 && (port = atoi(argv[1]))) {
+    return port;
+  } else {
+    return DEFAULT_PORT;
+  }
+}
+
 int main(int argc, char **argv)
 {
   DB *db = DB_create();
 
-  Server_start(db, DEFAULT_PORT);
+  int port = resolve_port(argc, argv);
+
+  Server_start(db, port);
 
   return 0;
 }