Release checkpoints

Modify Version

1. version= in setup.py -- mandatory

2. __versioninfo__ in snsapi/__init__.py -- mandatory

3. VERSION.md: Remember to modify the first header; Subsections describing micro verions can be merged into one as appropriate.

4. version and release in doc/conf.py

5. and 2. must be modified to be able to include in PyPI.

Documentation

1. use pandoc --from=markdown --to=rst --output=README.rst README.md to convert a .rst version. This is for presentation on PyPI.
2. go to http://readthedocs.org to trigger auto doc update.

Notice

The page Notice is used to notice users of volatile structures. e.g. a new field under prototyping. Check if we need to update it when release.