add readme for dhis2sync

dhis2sync/README.md

@@ -0,0 +1,41 @@
+# DHIS2sync script
+
+The script can be run with these options:
+
+Usage: node loadDHIS2Metadata.js [--help] [--config <FILE>] [--reset-time] [--full]
+       --help            Display this message and exit.
+       --config <FILE>   Load from given configuration file.
+       --reset-time      Reset last exported time and exit.
+       --full            Ignore the last exported time.
+
+A sample configuration file is in loadDHIS2MetadataConfig.json:
+
+```json
+{
+  "ilr": {
+    "url": "http://localhost:3447/fhir",
+    "user": "",
+    "pass": "",
+    "doc": ""
+  },
+  "dhis2": {
+    "url": "https://play.dhis2.org/2.30",
+    "user": "admin",
+    "pass": "district",
+    "dousers": false,
+    "doservices": true
+  }
+}
+```
+
+The script can be invoked with:
+```sh
+node loadDHIS2Metadata.js
+```
+
+This will get all locations in the DHIS2 demo system for version 2.30, and put them into the FHIR server. To confirm:
+```
+curl http://localhost:3447/fhir/Location
+```
+
+The ilr:doc is the name used for the datastore in DHIS2 to manage the timestamp.