fix compiler trying to read .drone.yml.

compiler/src/main.rs

@@ -42,7 +42,12 @@ fn main() {
         }
 
         let path = Path::new(&source_dir).join(entry.file_name());
+        if path.to_str().unwrap().contains(".drone.yml") {
+            continue;
+        }
+
         eprintln!("Loading manifest {}", path.to_str().unwrap());
+
         let manifest: Manifest = serde_yaml::from_reader(File::open(path.clone()).unwrap()).unwrap();
 
         let mut coll = SourceCollection::default();