Add README.md

Signed-off-by: HenrikJannsen <boilingfrog@gmx.com>

inventory/README.md

@@ -0,0 +1,42 @@
+## Inventory monitor
+
+This is a simple headless node with a http server which requests periodically from the seed nodes their inventory (not
+the full data but just the information about their network data).
+
+### Run inventory monitor
+
+Run the Gradle task:
+
+```sh
+./gradlew inventory:run
+```
+
+Or create a run scrip by:
+
+```sh
+./gradlew inventory:startBisqApp
+```
+
+And then run:
+
+```sh
+./bisq-inventory
+```
+
+### Customize inventory monitor
+
+To configure it with custom parameters append optional program arguments in the following order:
+
+Arguments: `port cleanupTorFiles intervalSec useLocalhostForP2P network`
+
+Values: `Integer 0|1 Integer 0|1 BTC_MAINNET|BTC_TESTNET|BTC_REGTEST`
+
+Example for localhost, regtest on port 8080: `8080 0 10 1 BTC_REGTEST`
+
+Example for production node with cleanupTorFiles=true: `80 1`
+
+Append the program arguments to the run script:
+
+```sh
+./bisq-inventory 8080 0 10 1 BTC_REGTEST
+```