LevelDB install on pypy

leveldb-install-on-pypy.sh

# tested on Ubuntu 14.04 Desktop Amd64

# **WARNING** By running this script, a `pip` command may be replaced with pypy's one.
# In such case, to invoke the original CPython's pip, you have to run it explicitly, 
# e.g., `python -m pip`.

# installation of pypy-dev
sudo apt-get install pypy-dev

# installation of distribute_setup/pip
curl -O http://python-distribute.org/distribute_setup.py
sudo pypy distribute_setup.py

curl -O https://raw.github.com/pypa/pip/master/contrib/get-pip.py
sudo pypy get-pip.py

# installation of leveldb with pip
sudo pypy -m pip install leveldb