added short preamble to index.js + automatic lib.version on travis builds

Author: nfriedly

dist/watson-speech.js

@@ -1,5 +1,10 @@
+// IBM Watson Speech JavaScript SDK
+// Copyright IBM (Apache-2.0)
+
 'use strict';
 
+exports.version = process.env.TRAVIS_BRANCH;
+
 exports.SpeechToText = require('./speech-to-text');
 
-// todo: add a text-to-speech library next
+// todo: add text-to-speech

index.js

@@ -8,7 +8,7 @@
     "lint": "eslint --config test/resources/.eslintrc.js *.js src/*.js",
     "test": "karma start test/resources/karma.conf.js --single-run",
     "test-integration": "TEST_MODE=integration karma start test/resources/karma.conf.js --single-run",
-    "browserify": "browserify index.js --standalone WatsonSpeech --outfile dist/watson-speech.js",
+    "browserify": "browserify index.js --standalone WatsonSpeech --outfile dist/watson-speech.js --transform envify",
     "minify": "with-package uglifyjs --compress --mangle --screw-ie8 dist/watson-speech.js --output dist/watson-speech.min.js --preamble \"// IBM Watson Speech JavaScript SDK\n// vpkg.version\n// Generated at `date`\n// Copyright IBM (pkg.license)\"",
     "watchify": "watchify index.js --standalone WatsonSpeech --outfile dist/watson-speech.js --debug --verbose",
     "build": "npm run browserify && npm run minify",