ADD measure build-size

.travis.yml

@@ -14,3 +14,4 @@ script:
 - npm run build
 - npm run test:node
 - travis_retry npm run test:browser
+- npm run test:size

package.json

@@ -24,6 +24,7 @@
     "test": "npm run test:node && npm run test:browser",
     "test:node": "npm run build && mocha ./test/index.test.js -b --timeout 6000 --exit",
     "test:browser": "npm run build && karma start ./config/karma.conf.js --single-run",
+    "test:size": "npm run build && rimraf test_tmp/browserify.js && browserify --no-builtins dist/lib/browserify.index.js > test_tmp/browserify.js && uglifyjs --compress --mangle --output test_tmp/browserify.min.js -- test_tmp/browserify.js && echo \"Build-Size (minified+gzip):\" && gzip-size --raw test_tmp/browserify.min.js",
     "lint": "eslint --ignore-path ./config/.eslintignore src test config scripts && solhint \"contracts/**/*.sol\"",
     "clear": "rimraf -rf ./dist && rimraf -rf ./gen && rimraf -rf ./test_tmp",
     "build:sol": "solidity-cli -i './contracts/*.sol' -o ./gen",
@@ -71,6 +72,7 @@
     "cross-env": "5.1.6",
     "eslint": "4.19.1",
     "ganache-cli": "6.1.0",
+    "gzip-size-cli": "^2.1.0",
     "is-node": "1.0.2",
     "js-sha3": "0.7.0",
     "karma": "2.0.2",
@@ -90,6 +92,7 @@
     "rimraf": "2.6.2",
     "solhint": "1.2.1",
     "solidity-cli": "1.0.1",
+    "uglify-es": "3.3.9",
     "web3": "1.0.0-beta.34"
   },
   "dependencies": {

src/browserify.index.js

@@ -0,0 +1,3 @@
+const EthCrypto = require('./index.js');
+
+window['EthCrypto'] = EthCrypto;