Verbose required paths

I installed to `c:\nodejs` to avoid spaces in path (old habits die hard). So i had an obstacle you see.

script/compile-coffee.py

@@ -9,6 +9,7 @@ SOURCE_ROOT = os.path.dirname(os.path.dirname(__file__))
 WINDOWS_NODE_PATHs = [
   'C:/Program Files/nodejs/node.exe',
   'C:/Program Files (x86)/nodejs/node.exe',
+  'C:/nodejs/node.exe',
 ]
 
 
@@ -21,7 +22,7 @@ def main():
   if sys.platform in ['win32', 'cygwin']:
     node = find_node()
     if not node:
-      print 'Node.js is required for building atom-shell'
+      print 'Node.js is required for building atom-shell at paths:\n' + '\n'.join(WINDOWS_NODE_PATHs)
       return 1
     subprocess.check_call(['node', coffee, '-c', '-o', output_dir, input_file],
                           executable=node)