Update default database directory to working directory

.gitignore

@@ -4,3 +4,4 @@
 **/*.rs.bk
 /*.mdb
 /query-history.txt
+/data.ms

meilisearch-http/src/option.rs

@@ -3,7 +3,7 @@ use structopt::StructOpt;
 #[derive(Debug, Clone, StructOpt)]
 pub struct Opt {
     /// The destination where the database must be created.
-    #[structopt(long, env = "MEILI_DB_PATH", default_value = "/tmp/meilisearch")]
+    #[structopt(long, env = "MEILI_DB_PATH", default_value = "./data.ms")]
     pub db_path: String,
 
     /// The address on which the http server will listen.