Merge branch 'appveyor_setup' of https://github.com/deepak1556/atom-shell into deepak1556-appveyor_setup

Conflicts:
	script/lib/util.py

script/lib/util.py

@@ -31,7 +31,7 @@ def scoped_cwd(path):
 
 def download(text, url, path):
   safe_mkdir(os.path.dirname(path))
-  with open(path, 'w') as local_file:
+  with open(path, 'wb') as local_file:
     web_file = urllib2.urlopen(url)
     file_size = int(web_file.info().getheaders("Content-Length")[0])
     downloaded_size = 0