Stop using AMD module system

  Remove "module: 'AMD'" together with "out: 'speech.browser.sdk.js'" from
  the gulp file.
  Squashed commits:
    * add gulp build only ES6 modules
    * update package.json for npm module support
    * update distrib es6 build
    * update gitignore
    * fix string template on Mic not allowed error
    * ES5 - IE fix

Author: salvoravida

.gitignore

@@ -2,6 +2,8 @@
 /**/node_modules/
 # ignore auto-generated (transpiled) js files
 src/**/*.js
+distrib/*
 
 /**/speech.key
-/samples/**/package-lock.json
+/samples/**/package-lock.json
+.idea/

distrib/speech.browser.sdk-min.js

@@ -26,9 +26,7 @@ gulp.task("build", function() {
             target: "ES5",
             declaration: true,
             noImplicitAny: true,
-            removeComments: true,
-            module: "AMD",
-            out: 'speech.browser.sdk.js'
+            removeComments: true
         }))
         .pipe(sourcemaps.write("."))
         .pipe(minify())

distrib/speech.browser.sdk.d.ts

@@ -3,6 +3,7 @@
   "version": "0.0.8",
   "description": "Microsoft Speech SDK for browsers",
   "main": "distrib/speech.browser.sdk-min.js",
+  "module": "distrib/Speech.Browser.Sdk.js",
   "types": "distrib/speech.browser.sdk.d.ts",
   "keywords": [
     "microsoft",

distrib/speech.browser.sdk.js

@@ -93,7 +93,7 @@ export class MicAudioSource implements IAudioSource {
                         this.OnEvent(new AudioSourceReadyEvent(this.id));
                         this.initializeDeferral.Resolve(true);
                     }, (error: MediaStreamError) => {
-                        const errorMsg = "Error occurred during microphone initialization: ${error}";
+                        const errorMsg = `Error occurred during microphone initialization: ${error}`;
                         const tmp = this.initializeDeferral;
                         // HACK: this should be handled through onError callbacks of all promises up the stack.
                         // Unfortunately, the current implementation does not provide an easy way to reject promises
@@ -111,7 +111,7 @@ export class MicAudioSource implements IAudioSource {
                 // NOTE: On iOS, the Web Audio API requires sounds to be triggered from an explicit user action.
                 // https://github.com/WebAudio/web-audio-api/issues/790
                 this.context.resume().then(next, (reason: any) => {
-                    this.initializeDeferral.Reject("Failed to initialize audio context: ${error}");
+                    this.initializeDeferral.Reject(`Failed to initialize audio context: ${reason}`);
                 });
             } else {
                 next();