Update testnets scripts & readme

scripts/t0-1mine-2sync.sh

@@ -2,11 +2,13 @@
 export MINER_SIGNING_KEY=4c0883a69102937d6231471b5dbb6204fe5129617082792ae468d01a3f362318;
 
 # MINER_SIGNING_KEY & MNEMONIC env vars are set on workstation.
-export CHAIN_ID=6363;
 # 12 sec
 BLOCK_TIME=12;
 
-export RPC_URL=http://ecomobicoin-1.cri.local.isima.fr:8545;
+# export RPC_URL=http://ecomobicoin-1.cri.local.isima.fr:8545;
+# export CHAIN_ID=6363;
+export RPC_URL=http://127.0.0.1:8545;
+export CHAIN_ID=636363;
 
 # Mine on eco1 with `--max-block 0`
 # 
@@ -16,7 +18,7 @@ export RPC_URL=http://ecomobicoin-1.cri.local.isima.fr:8545;
 # ./truite --chain-spec-file clermont-bootnode.ron --no-dns-discovery --cidr 192.168.0.0/16 --rpc-listen-address 0.0.0.0:8545
 # 
 
-# Mine every 10 secs or number of blocks
+# Mine
 for ((i=1; i<=100; i++))
 do
     echo "MINE $i/100";