PyArrow: Apache Arrow for Python

[Wes McKinney <we...@cloudera.com>]

hi folks,

It does not do much yet, but I added instructions for building and
installing the Python Arrow library on Linux and OS X (henceforth:
"pyarrow" or PyArrow):

https://github.com/apache/arrow/blob/master/python/doc/INSTALL.md

You can expect a lot of new code to show up in there (including more
library dependencies, like Parquet-cpp for Parquet file support) over
the next month, so I'll keep the instructions updated as things
develop. As you kick the tires, feel free to share your feedback here
or on JIRA! Patches welcome, too.

best,
Wes