Slight code restructuring

This patch:
- moves phantom shim shell into a bin/ folder
- introduces a new root index.js which exposes Browser to the
  dependent modules
- adds forgotten LICENSE header to the install.js

bin/puppeteer.js

@@ -0,0 +1,60 @@
+#!/usr/bin/env node
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+var vm = require('vm');
+var fs = require('fs');
+var path = require('path');
+var Puppeteer = require('..').Browser;
+var argv = require('minimist')(process.argv.slice(2), {
+    alias: { v: 'version' },
+    boolean: ['headless'],
+    default: {'headless': true },
+});
+
+if (argv.version) {
+    console.log('Puppeteer v' + require('./package.json').version);
+    return;
+}
+
+if (argv['ssl-certificates-path']) {
+    console.error('Flag --ssl-certificates-path is not supported.');
+    process.exit(1);
+    return;
+}
+
+var scriptArguments = argv._;
+if (!scriptArguments.length) {
+    console.log('puppeteer [scriptfile]');
+    return;
+}
+
+var scriptPath = path.resolve(process.cwd(), scriptArguments[0]);
+if (!fs.existsSync(scriptPath)) {
+    console.error(`script not found: ${scriptPath}`);
+    process.exit(1);
+    return;
+}
+
+var browser = new Browser({
+        remoteDebuggingPort: 9229,
+        headless: argv.headless,
+});
+
+var PhatomJs = require('./phantomjs');
+var context = PhatomJs.createContext(browser, scriptPath, argv);
+var scriptContent = fs.readFileSync(scriptPath, 'utf8');
+vm.runInContext(scriptContent, context);

index.js

@@ -1,4 +1,3 @@
-#!/usr/bin/env node
 /**
  * Copyright 2017 Google Inc. All rights reserved.
  *
@@ -15,46 +14,6 @@
  * limitations under the License.
  */
 
-var vm = require('vm');
-var fs = require('fs');
-var path = require('path');
-var Browser = require('./lib/Browser');
-var argv = require('minimist')(process.argv.slice(2), {
-    alias: { v: 'version' },
-    boolean: ['headless'],
-    default: {'headless': true },
-});
-
-if (argv.version) {
-    console.log('Puppeteer v' + require('./package.json').version);
-    return;
-}
-
-if (argv['ssl-certificates-path']) {
-    console.error('Flag --ssl-certificates-path is not currently supported.\nMore information at https://github.com/aslushnikov/puppeteer/issues/1');
-    process.exit(1);
-    return;
-}
-
-var scriptArguments = argv._;
-if (!scriptArguments.length) {
-    console.log('puppeteer [scriptfile]');
-    return;
-}
-
-var scriptPath = path.resolve(process.cwd(), scriptArguments[0]);
-if (!fs.existsSync(scriptPath)) {
-    console.error(`script not found: ${scriptPath}`);
-    process.exit(1);
-    return;
-}
-
-var browser = new Browser({
-        remoteDebuggingPort: 9229,
-        headless: argv.headless,
-});
-
-var PhatomJs = require('./phantomjs');
-var context = PhatomJs.createContext(browser, scriptPath, argv);
-var scriptContent = fs.readFileSync(scriptPath, 'utf8');
-vm.runInContext(scriptContent, context);
+module.exports = {
+    Browser: require('./lib/Browser')
+};

install.js

@@ -1,3 +1,19 @@
+/**
+ * Copyright 2017 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 var Downloader = require('./lib/Downloader');
 var revision = require('./package').puppeteer.chromium_revision;
 var fs = require('fs');

package.json

@@ -22,7 +22,7 @@
     "rimraf": "^2.6.1"
   },
   "bin": {
-    "puppeteer": "index.js"
+    "puppeteer": "./bin/puppeteer.js"
   },
   "puppeteer": {
     "chromium_revision": "471584"