More linting.

src/util.rs

@@ -68,7 +68,7 @@ impl SQLiteConnectionFactory {
         }
     }
 
-    pub fn inMemory() -> SQLiteConnectionFactory {
+    pub fn in_memory() -> SQLiteConnectionFactory {
         SQLiteConnectionFactory {
             creator: SQLiteConnectionCreator::Ephemeral(EphemeralSQLiteConnectionCreator {}),
         }