json: Add setup metadata.

json/setup.py

@@ -0,0 +1,16 @@
+#import sys
+# Remove current dir from sys.path, otherwise distutils will peek up our
+# copy module instead of system.
+#sys.path.pop(0)
+from setuptools import setup
+
+setup(name='micropython-json',
+      version='0.1',
+      description='CPython json package ported to MicroPython',
+      url='https://github.com/micropython/micropython/issues/405',
+      author='CPython Developers',
+      maintainer='MicroPython Developers',
+      maintainer_email='micro-python@googlegroups.com',
+      license='Python',
+      install_requires=['micropython-re-pcre'],
+      packages=['json'])