jsutil: put all js utils in one file

cmd/jsutils/README.md

@@ -10,38 +10,9 @@ Install node.js dependency:
 ```shell script
     npm install
 ```
-## Run
-### 1.Get Validator's Information: Version, MinGasPrice
-mainnet validators version
-```bash
-    npm run startMainnet
-```
-testnet validators version
-```bash
-    npm run startTestnet
-```
-
-### 2.Get Transaction Count
-```bash
-node gettxcount.js --rpc ${url} --startNum ${start} --endNum ${end} --miner ${miner} (optional)
-```
 
-### 3. Get Performance
-```bash
-node get_perf.js --rpc ${url} --startNum ${start} --endNum ${end}
-```
-output as following
-```bash
-Get the performance between [ 19470 , 19670 )
-txCountPerBlock = 3142.81 txCountTotal = 628562 BlockCount = 200 avgBlockTime = 3.005 inturnBlocksRatio = 0.975 justifiedBlocksRatio = 0.98
-txCountPerSecond = 1045.8602329450914 avgGasUsedPerBlock = 250.02062627 avgGasUsedPerSecond =  83.20153952412646
+## Run
+Run according to the usage:
 ```
-
-### 4. Get validators slash count
-```bash
-use the latest block 
-node getslashcount.js --Rpc ${ArchiveRpc} 
-use a block number
-node getslashcount.js --Rpc ${ArchiveRpc} --Num ${blockNum}
+node getchainstatus.js --help
 ```
-