Add README.md file

Signed-off-by: tpmccallum <[email protected]>

Author: tpmccallum

examples/vault-variable-test/Cargo.toml

@@ -10,6 +10,6 @@ crate-type = ["cdylib"]
 
 [dependencies]
 anyhow = "1"
-spin-sdk = { path = "../../sdk/rust" }
+spin-sdk = { git = "https://github.com/fermyon/spin", tag = "v2.1.0" }
 
 [workspace]

examples/vault-variable-test/README.md

@@ -0,0 +1,38 @@
+This example relates to the [Vault Application Variable Provider Example](https://developer.fermyon.com/spin/v2/dynamic-configuration#vault-application-variable-provider-example) documentation.
+
+You are best to visit the above link for more information, but for convenience, below is the steps taken to set up the Vault side of the application:
+
+1. [Install Vault](https://developer.hashicorp.com/vault/tutorials/getting-started/getting-started-install)
+
+2. Start Vault:
+
+```bash
+vault server -dev -dev-root-token-id root
+```
+
+3. Set a password:
+
+```bash
+export VAULT_TOKEN=root
+export VAULT_ADDR=http://127.0.0.1:8200
+vault kv put secret/password value="test_password"
+vault kv get secret/password
+```
+
+4. Build the application:
+
+```bash
+spin build
+```
+
+5. Run the application:
+
+```bash
+spin up --runtime-config-file runtime_config.toml
+```
+
+6. Test the application:
+
+```bash
+curl -i http://127.0.0.1:3000
+```