(#107) Remove library keyword from non-package files

Author: alexcmgit

lib/environment.dart

@@ -1,4 +1,2 @@
-library shared_storage;
-
 export './src/environment/environment.dart';
 export './src/environment/environment_directory.dart';

lib/media_store.dart

@@ -1,4 +1,2 @@
-library shared_storage;
-
 export './src/media_store/media_store.dart';
 export './src/media_store/media_store_collection.dart';

lib/saf.dart

@@ -1,5 +1,3 @@
-library shared_storage;
-
 export './src/saf/document_bitmap.dart';
 export './src/saf/document_file.dart';
 export './src/saf/document_file_column.dart';

lib/shared_storage.dart

@@ -1,3 +1,5 @@
+library shared_storage;
+
 export './environment.dart';
 export './media_store.dart';
 export './saf.dart';