feat(install selenium): better communication in the install script

Adds better messages in the selenium server install script, and also
makes the script output a 'start' executable which can be used to quickly
start up the selenium standalone. *not yet windows friendly*. Closes #108.

README.md

@@ -117,7 +117,7 @@ A script is included to do the download for you - run (add the --nocd option if
 
 Start the selenium standalone with
 
-    java -jar selenium/selenium-server-standalone-2.35.0.jar -Dwebdriver.chrome.driver=./selenium/chromedriver
+    ./selenium/start
 
 For alternate ways to download and start the selenium standalone, see
 [the webdriver docs](http://docs.seleniumhq.org/docs/03_webdriver.jsp#running-standalone-selenium-server-for-use-with-remotedrivers).

bin/install_selenium_standalone

@@ -22,14 +22,21 @@ var CHROMEDRIVER_URL_WINDOWS =
     'https://chromedriver.googlecode.com/files/chromedriver_win32_2.2.zip';
 
 var DOWNLOAD_DIR = './selenium/';
+var START_SCRIPT_FILENAME = DOWNLOAD_DIR + 'start';
 var chromedriver_url = '';
+var start_script = 'java -jar selenium/selenium-server-standalone-2.35.0.jar';
+
 
 if (!fs.existsSync(DOWNLOAD_DIR) || !fs.statSync(DOWNLOAD_DIR).isDirectory()) {
   fs.mkdirSync(DOWNLOAD_DIR);
 }
 
+console.log(
+  'When finished, start the Selenium Standalone Server with ./selenium/start \n');
+
 // Function to download file using HTTP.get
 var download_file_httpget = function(file_url, callback) {
+  console.log('downloading ' + file_url + '...');
   var options = {
     host: url.parse(file_url).host,
     port: 80,
@@ -70,6 +77,7 @@ if (!(process.argv[2] == '--nocd')) {
   }
 
   var chromedriver_zip = chromedriver_url.split('/').pop();
+  start_script += ' -Dwebdriver.chrome.driver=./selenium/chromedriver';
 
   download_file_httpget(chromedriver_url, function(file_name) {
     var zip = new AdmZip(file_name);
@@ -79,3 +87,9 @@ if (!(process.argv[2] == '--nocd')) {
     }
   });
 }
+
+var start_script_file = fs.createWriteStream(START_SCRIPT_FILENAME);
+start_script_file.write(start_script);
+start_script_file.end(function() {
+  fs.chmod(START_SCRIPT_FILENAME, 0755);
+});

docs/getting-started.md

@@ -40,7 +40,7 @@ the standalone server. Run
 This installs selenium standalone server and chromedriver to `./selenium`. Start
 the server with
 
-    java -jar selenium/selenium-server-standalone-2.35.0.jar -Dwebdriver.chrome.driver=./selenium/chromedriver
+    ./selenium/start
 
 Protractor is now available as a command line program which takes one argument,
 a configuration file.