feat(*): add dist (umd), add webpack, lint, build, optimise npm package

.babelrc

@@ -0,0 +1,3 @@
+{
+  "presets": ["@babel/preset-env"]
+}

.eslintrc

@@ -0,0 +1,31 @@
+{
+  "env": {
+	"es6": true,
+	"node": true
+  },
+  "parserOptions": {
+	"ecmaVersion": 2017
+  },
+  "extends": "eslint:recommended",
+  "rules": {
+	"indent": [
+	  "error",
+	  "tab"
+	],
+	"linebreak-style": [
+	  "error",
+	  "unix"
+	],
+	"quotes": [
+	  "error",
+	  "single"
+	],
+	"semi": [
+	  "error",
+	  "always"
+	]
+  },
+  "plugins": [
+	"mocha"
+  ]
+}

.gitignore

@@ -1,4 +1,4 @@
-.idea
-node_modules
-yarn.lock
-build
+/.idea
+/node_modules
+/dist
+yarn.lock

package.json

@@ -1,15 +1,24 @@
 {
  "name": "erc20-contract-js",
- "version": "1.2.0",
+ "version": "1.3.0",
  "description": "Simple JS library used to manipulate with ERC-20 token contracts",
  "keywords": [
-  "ethereum",
-  "web3",
-  "javascript",
   "erc20",
+  "contract",
+  "abi",
+  "javascript",
+  "web3",
+  "ethereum",
+  "eth",
+  "token",
   "contract"
  ],
  "main": "index.js",
+ "unpkg": "dist/erc20-contract-js.min.js",
+ "files": [
+  "/src",
+  "/dist"
+ ],
  "repository": "https://github.com/OsoianMarcel/erc20-contract-js.git",
  "homepage": "https://github.com/OsoianMarcel/erc20-contract-js",
  "bugs": {
@@ -21,12 +30,21 @@
   "web3": "^1.0.0-beta.30"
  },
  "devDependencies": {
+  "@babel/core": "^7.4.3",
+  "@babel/preset-env": "^7.4.3",
+  "babel-loader": "^8.0.5",
   "chai": "^4.1.2",
   "chai-as-promised": "^7.1.1",
+  "eslint": "^5.16.0",
+  "eslint-plugin-mocha": "^5.3.0",
   "mocha": "^5.0.1",
-  "web3": "^1.0.0-beta.30"
+  "web3": "^1.0.0-beta.30",
+  "webpack": "^4.30.0",
+  "webpack-cli": "^3.3.0"
  },
  "scripts": {
-  "test": "mocha"
+  "test": "mocha",
+  "build": "webpack",
+  "lint": "eslint ./src"
  }
 }