update native-fungible readme

examples/non-fungible/README.md

@@ -26,16 +26,44 @@ NFTs can be transferred to various destinations, including:
 
 ### Setting Up
 
-Most of this can be referred to the [fungible app README](https://github.com/linera-io/linera-protocol/blob/main/examples/fungible/README.md#setting-up), except for at the end when compiling and publishing the bytecode, what you'll need to do will be slightly different.
+Before getting started, make sure that the binary tools `linera*` corresponding to
+your version of `linera-sdk` are in your PATH. For scripting purposes, we also assume
+that the BASH function `linera_spawn` is defined.
+
+From the root of Linera repository, this can be achieved as follows:
 
 ```bash
 export PATH="$PWD/target/debug:$PATH"
 source /dev/stdin <<<"$(linera net helper 2>/dev/null)"
+```
 
-linera_spawn_and_read_wallet_variables linera net up --testing-prng-seed 37
+Next, start the local Linera network and run a faucet:
+
+```bash
+FAUCET_PORT=8079
+FAUCET_URL=http://localhost:$FAUCET_PORT
+linera_spawn linera net up --with-faucet --faucet-port $FAUCET_PORT
+
+# If you're using a testnet, run this instead:
+#   LINERA_TMP_DIR=$(mktemp -d)
+#   FAUCET_URL=https://faucet.testnet-XXX.linera.net  # for some value XXX
 ```
 
-Compile the `non-fungible` application WebAssembly binaries, and publish them as an application bytecode:
+Create the user wallet and add chains to it:
+
+```bash
+export LINERA_WALLET="$LINERA_TMP_DIR/wallet.json"
+export LINERA_STORAGE="rocksdb:$LINERA_TMP_DIR/client.db"
+
+linera wallet init --faucet $FAUCET_URL
+
+INFO_1=($(linera wallet request-chain --faucet $FAUCET_URL))
+INFO_2=($(linera wallet request-chain --faucet $FAUCET_URL))
+CHAIN_1="${INFO_1[0]}"
+CHAIN_2="${INFO_2[0]}"
+OWNER_1="${INFO_1[3]}"
+OWNER_2="${INFO_2[3]}"
+```
 
 ```bash
 (cd examples/non-fungible && cargo build --release --target wasm32-unknown-unknown)
@@ -52,15 +80,6 @@ Unlike fungible tokens, each NFT is unique and identified by a unique token ID.
 
 Refer to the [fungible app README](https://github.com/linera-io/linera-protocol/blob/main/examples/fungible/README.md#creating-a-token) to figure out how to list the chains created for the test in the default wallet, as well as defining some variables corresponding to these values.
 
-```bash
-linera wallet show
-
-CHAIN_1=aee928d4bf3880353b4a3cd9b6f88e6cc6e5ed050860abae439e7782e9b2dfe8  # default chain for the wallet
-OWNER_1=de166237331a2966d8cf6778e81a8c007b4084be80dc1e0409d51f216c1deaa1  # owner of chain 1
-CHAIN_2=63620ea465af9e9e0e8e4dd8d21593cc3a719feac5f096df8440f90738f4dbd8  # another chain in the wallet
-OWNER_2=598d18f67709fe76ed6a36b75a7c9889012d30b896800dfd027ee10e1afd49a3  # owner of chain 2
-```
-
 To create the NFT application, run the command below:
 
 ```bash