README.md in embulk-input-gcs-0.2.5 vs README.md in embulk-input-gcs-0.2.6

@@ -38,10 +38,11 @@
 ## Configuration
 
 - **bucket** Google Cloud Storage bucket name (string, required)
 - **path_prefix** prefix of target keys (string, either of "path_prefix" or "paths" is required)
 - **paths** list of target keys (array of string, either of "path_prefix" or "paths" is required)
+* **path_match_pattern**: regexp to match file paths. If a file path doesn't match with this pattern, the file will be skipped (regexp string, optional)
 - **incremental**: enables incremental loading(boolean, optional. default: true. If incremental loading is enabled, config diff for the next execution will include `last_path` parameter so that next execution skips files before the path. Otherwise, `last_path` will not be included.
 - **auth_method**  (string, optional, "private_key", "json_key" or "compute_engine". default value is "private_key")
 - **service_account_email** Google Cloud Storage service_account_email (string, required when auth_method is private_key)
 - **p12_keyfile** fullpath of p12 key (string, required when auth_method is private_key)
 - **json_keyfile** fullpath of json_key (string, required when auth_method is json_key)
@@ -85,9 +86,24 @@
     - {name: account, type: long}
     - {name: time, type: timestamp, format: '%Y-%m-%d %H:%M:%S'}
     - {name: purchase, type: timestamp, format: '%Y%m%d'}
     - {name: comment, type: string}
 out: {type: stdout}
+```
+
+To skip files using regexp:
+
+```yaml
+in:
+  type: gcs
+  bucket: my-gcs-bucket
+  path_prefix: logs/csv-
+  # ...
+  path_match_pattern: \.csv$   # a file will be skipped if its path doesn't match with this pattern
+  ## some examples of regexp:
+  #path_match_pattern: /archive/         # match files in .../archive/... directory
+  #path_match_pattern: /data1/|/data2/   # match files in .../data1/... or .../data2/... directory
+  #path_match_pattern: .csv$|.csv.gz$    # match files whose suffix is .csv or .csv.gz
 ```
 
 ## Authentication
 
 There are three methods supported to fetch access token for the service account.