Rewrite compile-coffee script in python.

script/compile-coffee.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python
+
+import os
+import subprocess
+import sys
+
+from lib.util import *
+
+
+SOURCE_ROOT = os.path.dirname(os.path.dirname(__file__))
+
+
+def main():
+  input_file = sys.argv[1]
+  output_dir = os.path.dirname(sys.argv[2])
+
+  node = get_node_path()
+  coffee = os.path.join(SOURCE_ROOT, 'node_modules', '.bin', 'coffee')
+  subprocess.check_call([node, coffee, '-c', '-o', output_dir, input_file])
+
+
+if __name__ == '__main__':
+  sys.exit(main())