Update README.md and pre-commit workflow (#16)

.github/workflows/pre-commit.yaml

@@ -10,6 +10,6 @@ jobs:
     name: "pre-commit hooks"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
-      - uses: pre-commit/action@v2.0.3
+    - uses: actions/checkout@v3
+    - uses: actions/setup-python@v3
+    - uses: pre-commit/action@v3.0.0

.pre-commit-config.yaml

@@ -3,7 +3,7 @@ repos:
     rev: 22.6.0
     hooks:
       - id: black
-  - repo: https://gitlab.com/pycqa/flake8
+  - repo: https://github.com/PyCQA/flake8.git
     rev: 4.0.1
     hooks:
       - id: flake8

README.md

@@ -36,7 +36,13 @@ import xpartition
 
 from external import construct_lazy_dataset
 
+parser = argparse.ArgumentParser(
+    prog="initialize_store",
+    description="initialize a zarr store for a dataset"
+)
 parser.add_argument("store", help="absolute path to directory to store zarr result")
+
+args = parser.parse_args()
 ds = construct_lazy_dataset()
 ds.partition.initialize_store(args.store)
 ```
@@ -49,7 +55,10 @@ import xpartition
 
 from external import construct_lazy_dataset
 
-
+parser = argparse.ArgumentParser(
+    prog="write_partition",
+    description="write a partition of a dataset"
+)
 parser.add_argument("store", help="absolute path to directory to store zarr result")
 parser.add_argument("ranks", type=int, help="total number of available ranks")
 parser.add_argument("rank", type=int, help="rank of job")