Merge pull request 'Use is_empty instead of length > 0' (#2) from feature/fix-clippy-warning into master

Reviewed-on: #2

src/main.rs

@@ -61,7 +61,7 @@ fn traverse_dir(
             if config.use_gitignore {
                 let should_ignore = gitignore.iter().find(|&line| path.contains(&line.clone()));
 
-                if should_ignore.unwrap_or(&String::from("")).len() > 0
+                if !should_ignore.unwrap_or(&String::from("")).is_empty()
                     || entry.path().to_str().unwrap().contains("/.git")
                 {
                     continue;