[feat] modify README.md

.gitignore

@@ -0,0 +1 @@
+node_modules

README.md

@@ -1 +1,54 @@
 # harmony-sdk-examples
+
+# Install
+
+```bash
+yarn install
+```
+
+
+# Test local wallet
+
+1. open `nodejs`
+2. run `node testWallet.js`
+3. you can see `mnemonic` and `simple password` and 10 accounts imported
+
+
+# Test with Harmony node
+
+First you have to run harmony's test node.
+
+1. git clone
+
+    ``` bash
+    git clone git@github.com:harmony-one/harmony.git
+    ```
+
+2. follow the `Build all executables` instruction, [here](https://github.com/harmony-one/harmony/tree/master)
+3. open your editor, inside `core/resharding.go` , edit `GenesisShardSize = 50` to `GenesisShardSize = 5`
+4. use this script to run
+
+   ```bash
+   ./test/deploy.sh ./test/configs/ten-oneshard.txt
+   ```
+
+Wait for the test-node running for 30 seconds,
+
+Then **open another console** , go back to our `nodejs` folder, 
+
+Run:
+
+``` bash
+node testNode.js
+```
+
+
+# Test with `ganache-cli`
+** ganache-cli runs in js file **, 
+
+In this case, we use ganache and ethereum's setting to simulate the result
+
+We don't need harmony's testnode running.
+
+1. open `nodejs`
+2. run `node testGanache.js`

nodejs/contracts/Calc.sol

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+pragma solidity ^0.5.1;
+
+contract Calc {
+
+    uint count;
+
+    function getCount() public returns (uint) {
+
+        return count;
+
+    }
+
+    function add(uint a, uint b) public returns (uint) {
+        count++;
+        return a + b;
+    }
+
+
+}

nodejs/contracts/MyContract.sol

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+pragma solidity ^0.5.1;
+
+
+contract MyContract {
+    function myFunction() public returns(uint256 myNumber, string memory myString) {
+        return (23456, "Hello!%");
+    }
+}

nodejs/contracts/SimpleStorage.sol

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+pragma solidity ^0.5.1;
+
+contract SimpleStorage {
+
+    event ValueChanged(address indexed author, string oldValue, string newValue);
+
+    string _value;
+
+    constructor(string memory value) public {
+        emit ValueChanged(msg.sender, _value, value);
+        _value = value;
+    }
+
+    function getValue() view public returns (string memory) {
+        return _value;
+    }
+
+    function setValue(string memory value) public {
+        emit ValueChanged(msg.sender, _value, value);
+        _value = value;
+    }
+
+}

nodejs/index.js

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+const { Harmony } = require('@harmony-js/core')
+const { ChainID, ChainType } = require('@harmony-js/utils')
+
+const Settings = {
+  Ropsten: {
+    http: 'https://ropsten.infura.io/v3/4f3be7f5bbe644b7a8d95c151c8f52ec',
+    ws: 'wss://ropsten.infura.io/ws/v3/4f3be7f5bbe644b7a8d95c151c8f52ec',
+    type: ChainType.Ethereum,
+    id: ChainID.Ropsten
+  },
+  Rinkeby: {
+    http: 'https://rinkeby.infura.io/v3/4f3be7f5bbe644b7a8d95c151c8f52ec',
+    ws: 'wss://rinkeby.infura.io/ws/v3/4f3be7f5bbe644b7a8d95c151c8f52ec',
+    type: ChainType.Ethereum,
+    id: ChainID.Ropsten
+  },
+  Ganache: {
+    http: 'http://localhost:18545',
+    ws: 'ws://localhost:18545',
+    type: ChainType.Ethereum,
+    id: ChainID.Ganache
+  }
+}
+
+// a function that will map the setting to harmony class constructor inputs
+function useSetting(setting, providerType) {
+  return [setting[providerType], setting.type, setting.id]
+}
+
+// simply change `Ropsten` to `Rinkeby` to test with different testnet
+// and switch `ws` or `http` as RPC provider
+
+const harmony = new Harmony(...useSetting(Settings.Ropsten, 'ws'))
+
+// import our preset mnes
+const mne =
+  'food response winner warfare indicate visual hundred toilet jealous okay relief tornado'
+
+// now we have the mnes added to wallet
+const acc1 = harmony.wallet.addByMnemonic(mne, 0)
+
+// now we create contract using extracted abi
+// const myContract = harmony.contracts.createContract(abi)
+
+// first we get the account's balance to see if we have enough token on the testnet
+acc1.getBalance().then(res => {
+  console.log(`-- hint: account balance of ${acc1.address}`)
+  console.log(``)
+  console.log({ account: res })
+  console.log(``)
+  console.log(``)
+})

nodejs/temp.html

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+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <meta name="apple-mobile-web-app-capable" content="yes" />
+    <meta name="apple-mobile-web-app-status-bar-style" content="black" />
+    <meta name="format-detection" content="telephone=no" />
+    <meta name="format-detection" content="email=no" />
+    <meta
+      name="viewport"
+      content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"
+    />
+    <title></title>
+  </head>
+  <style>
+    #nodeUrl,
+    #address {
+      width: 250px;
+      height: 50px;
+      font-size: 16px;
+    }
+
+    #setProviderButton,
+    #getBlanceButton {
+      width: 100px;
+      height: 50px;
+      margin-left: 16px;
+      background: rgba(0, 0, 0, 1);
+      color: #ffffff;
+    }
+  </style>
+
+  <body>
+    <div id="root">
+
+    </div>
+
+    <script src="../dist/HarmonyJs.browser.js"></script>
+    <script>
+
+       const harmony= new HarmonyJs.Harmony('ws://localhost:9128',0);
+
+       // console.log()
+
+
+
+
+      const biubiubiu = async () => {
+  const p= await harmony.blockchain.newBlockHeaders()
+  // harmony.blockchain.newBlockHeaders()
+
+
+    p.onData(res=>{
+      console.log(res)
+    }).on('error',error=>{
+      console.log(error)
+    })
+    setTimeout(()=>{
+      if(p.subscriptions!=={}){
+      p.clearSubscriptions('eth_unsubscribe').then(res=>{
+        if(res){
+          console.log('Successfully unsubscribed!')
+        }
+      })
+    }
+    },50000)
+
+}
+
+setTimeout(biubiubiu, 100);
+
+
+
+    </script>
+  </body>
+</html>