Update README.md (#77)

Signed-off-by: Yu Ishikawa <yu-iskw@users.noreply.github.com>

README.md

@@ -35,13 +35,15 @@ Those are the classes to parse dbt artifacts.
 - [ManifestV9](dbt_artifacts_parser/parsers/manifest/manifest_v9.py) for manifest.json v9
 - [ManifestV10](dbt_artifacts_parser/parsers/manifest/manifest_v10.py) for manifest.json v10
 - [ManifestV11](dbt_artifacts_parser/parsers/manifest/manifest_v11.py) for manifest.json v11
+- [ManifestV12](dbt_artifacts_parser/parsers/manifest/manifest_v12.py) for manifest.json v12
 
 ### Run Results
 - [RunResultsV1](dbt_artifacts_parser/parsers/manifest/manifest_v1.py) for run_results.json v1
 - [RunResultsV2](dbt_artifacts_parser/parsers/manifest/manifest_v2.py) for run_results.json v2
 - [RunResultsV3](dbt_artifacts_parser/parsers/manifest/manifest_v3.py) for run_results.json v3
 - [RunResultsV4](dbt_artifacts_parser/parsers/manifest/manifest_v4.py) for run_results.json v4
 - [RunResultsV5](dbt_artifacts_parser/parsers/manifest/manifest_v5.py) for run_results.json v5
+- [RunResultsV6](dbt_artifacts_parser/parsers/manifest/manifest_v6.py) for run_results.json v6
 
 ### Sources
 - [SourcesV1](dbt_artifacts_parser/parsers/sources/sources_v1.py) for sources.json v1
@@ -157,6 +159,13 @@ from dbt_artifacts_parser.parser import parse_manifest_v11
 with open("path/to/manifest.json", "r") as fp:
     manifest_dict = json.load(fp)
     manifest_obj = parse_manifest_v11(manifest=manifest_dict)
+
+# parse manifest.json v12
+from dbt_artifacts_parser.parser import parse_manifest_v12
+
+with open("path/to/manifest.json", "r") as fp:
+    manifest_dict = json.load(fp)
+    manifest_obj = parse_manifest_v12(manifest=manifest_dict)
 ```
 
 ### Parse run-results.json
@@ -205,6 +214,13 @@ from dbt_artifacts_parser.parser import parse_run_results_v5
 with open("path/to/run-results.json", "r") as fp:
     run_results_dict = json.load(fp)
     run_results_obj = parse_run_results_v5(run_results=run_results_dict)
+
+# parse run-results.json v6
+from dbt_artifacts_parser.parser import parse_run_results_v6
+
+with open("path/to/run-results.json", "r") as fp:
+    run_results_dict = json.load(fp)
+    run_results_obj = parse_run_results_v6(run_results=run_results_dict)
 ```
 
 ### Parse sources.json