Add tronweb, add test cases, update README

Author: PhyrexTsai

assets/docker.png

@@ -19,6 +19,15 @@ npm i -g tronbox
 
 ## Local testing
 
+Start docker
+
+```
+docker run -it --rm -p 9090:9090 --name tron trontools/quickstart
+```
+
+![Docker image](../assets/docker.png)
+
+Run test
 ```
 tronbox test
-```
+```

contracts/README.md

@@ -11,5 +11,8 @@
     "test": "source .env && tronbox test"
   },
   "author": "Portal Network",
-  "license": "MIT"
+  "license": "MIT",
+  "dependencies": {
+    "tronweb": "^2.6.4"
+  }
 }

contracts/package-lock.json

@@ -0,0 +1,15 @@
+const TronWeb = require('tronweb');
+const tronWeb = new TronWeb({
+  fullHost: 'https://api.trongrid.io',
+  privateKey: process.env.PRIVATE_KEY_SHASTA
+})
+
+contract('TRXNS', function(accounts) {
+  it("should verify that there are at least three available accounts", async function () {
+    console.log(accounts.length);
+    if(accounts.length < 3) {
+      //console.log(chalk.blue('\nYOUR ATTENTION, PLEASE.]\nTo test MetaCoin you should use Tron Quickstart (https://github.com/tronprotocol/docker-tron-quickstart) as your private network.\nAlternatively, you must set your own accounts in the "before" statement in "test/metacoin.js".\n'))
+    }
+    assert.isTrue(accounts.length >= 3)
+  })
+})